From the moment a father lays eyes on his first-born son, a strong love overwhelms them.
Most dads claim their son as "the next great quarterback" or "the future point guard" of high school fame - and some are right.
But one thing most fathers don't have the opportunity to do is coach them through those trying high school years.
It's a rare opportunity - the chance for a father to coach his son during the high school phase of his life. But for a trio of Glen Rose coaches, it's one they wouldn't trade for anything.
Head coaches Tommy Dunn (football), Wayne Roberts (basketball) and Kenny Toney (baseball) have all had experiences in coaching their sons in their respective sports and, with Father's Day weekend fresh on their minds, have looked back on the opportunity of a lifetime.
Dunns dominate the football field
For 20 years, Dunn spent countless hours working with hundreds of teenagers at Stephenville High School. But for two years in the mid-2000s, the current Tiger AD was able to spend everyday with his first-born son, Tyler.
"It was great just getting to spend time with him everyday," said Coach Dunn. "As a coach, you spend a lot of time around other people's kids and not your own, so it was nice to have that daily interaction with him.
"It's something I look back on and am fond of," he added. "I don't really know if Ty will say the same thing, but I have nothing but fond memories."
Tyler graduated from Stephenville in 2005 and played for a varsity squad that tasted defeated just three times in two years, giving the Dunn's something to smile about.
"It helps the relationship when you're winning," said Coach Dunn.
But despite the constant on-field success, the veteran coach kept the "fine line" between coach and father.
"I was a lot harder on him than the other kids," said the coach. "There really is a fine line when you're coaching your own son. I made sure he didn't get any special treatment from me or the other coaches. I personally never had any issues with that, but I have seen coaches who did."
Fortuantely for Dunn, he had several coaching role models to follow behind at Stephenville.
"Every situation is different," said Coach Dunn. "I remember we had (quarterbacks) Kelan Luker and Kendall Briles, whose dads were on the staff, and Mike Copeland, whose kids played for us. They handled the situation well and were good examples on the staff."
Also, just like every other father/coach to have had this opportunity, Tommy had to find the seperation between coach and dad.
"Sometimes the coaching would carry over to the home," admitted Coach Dunn. "We would go home and tweak some things, but I don't think that's too healthy. I know dads want what's best for their kids, but it can get overbearing.
"We had to keep the coaching on the field," he added.
But despite the fine lines, the seperation and the departure, Coach Dunn said it was his fondest memory of coaching.
"It was all good," said Coach Dunn. "I remember his last game and the feelings that were there. As coaches, we get close to kids and then you hate to see them go, but it's a lot harder when it's you're own son.
"Between Ty and the group he ran with, we were all pretty close," he added. "We had the fun times together, the hanging out and the fun times at practice. It was the things behind the scenes that made it special and for the most part, it was all good."
Tyler has since moved on to attend Tarleton State University and marry his high school sweetheart, while Tommy is in his fourth season as head football coach and athletic director at Glen Rose High School.
Roberts boys handle the hardwood
Wayne Roberts had a few years to wait between the high school careers of his two sons, but when the Roberts boys took the floor, winning was always an option.
"I have had four 30-win seasons," said Roberts. "I have been fortuante enough to say that two of those have come when my sons were on the team."
Roberts has won over 600 games in his career and will be approaching the 650-mark this season.
"The overall joy of coaching and being successful is very gratifying," said Roberts. "It fulfills me as a coach and as a father."
Before coming to Glen Rose in 2002, the veteran basketball coach was at Lamesa where his first-born son, Steven, rose to the top and carried his team to the state tournament.
The Glen Rose community is familiar with Clay, a four-year starter for the Tigers from 2002-06.
"I had two boys the exact opposite," said Coach Roberts. "Steven was hot-headed and super competitive. There would be times when I had to take him out of the game just to let him cool off.
"Whereas, Clay was cool, calm and in control at all times," he continued. "There would be times when people would try to foul him and try to hurt him, but he would just get up and smile at them."
In addition to the difference in attitude, Roberts also faced an extreme difference in his boys' reception by the home fans.
"Coaching Steven was a lot harder for me," said Roberts. "Coaches are always under a lot of pressure and some people felt that Steven was only on the varsity because he was my son, but he went out there and proved on the floor that he deserved it.
"It helped that I was in Lamesa for 21 years," he continued. "People knew me and knew who I was. I established myself.
"On the other hand, no one questioned Clay," he continued. "Everyone here recognized his ability right away, plus we were already going through a change in philosophy in a very tough district, so people were questioning the philosphy more than him."
But when all was said and done, both boys led Coach Roberts deep into the playoffs and were honored, not just by the hometown fans, but by the other coaches.
"That was the best thing for me," said Coach Roberts. "To see them recognized by other coaches means more to me because they had to go out there and earn it. I never solicited the other coaches for my own sons. When other coaches tell you how good your sons are, it makes you proud as a coach and a father."
Steven graduated from Lamesa High School in 1999 before going on to Lubbock Christian. He is married and currently works as a mortician in Lubbock.
Clay got married earlier this month and is finishing his master's degree at Lubbock Christian.
Coach Roberts is entering his 30th season as a head coach, the last 11 spent at Glen Rose High School.
Toneys take change in stride, together
Unlike Coach Dunn and Coach Roberts, head baseball coach Kenny Toney had the opportunity to coach both of his sons at the same time, but suffered through significant changes in the middle of their careers.
"I enjoyed those years very much," said Toney. "It was great, but it came with a downside too. It was probably tougher for them to play for me than it was for me to coach them. But there was nothing like being able to coach my own boys."
With both sons at the junior high school, Toney anticipated their arrival to the high school while he was the head coach at Caldwell.
"I couldn't hardly wait," said Toney. "I was chompin' at the bit to get them up there with me. I knew what kind of players they were and they would give me something to work with."
Toney's oldest son, Kyle, was first up, while Kory, a year younger, had to wait his turn.
"I did with Kyle what I do with a lot of young kids now," said Coach Toney. "I gave him the opportunity to play with the varsity during summer ball. He played well and earned his spot.
"We had to go through that 'it's only because he's the coach's son' stuff," he added. "But he earned his spot. It also happened that we had a need at that position. If we had an incumbent shortstop, then Kyle would have probably played on the JV.
"It's hard because when your son makes a great play, there is a part of you that wants to stick your chest out and say 'that's my son!' But you can't," said Coach Toney. "Some people might take it as having partiality towards them and you can't do that."
That situation did play out in the following year when Kory arrived to the high school.
"We had a senior catcher coming back so Kory played for the JV," said Coach Toney. "I called him up for the playoffs and he pinch hit a couple of times, and he heard the same stuff about being the coach's son."
After Kyle's sophomore season - Kory's freshman - the Toneys relocated to Alvarado where Coach Toney went from being a head coach to an assistant head coach and Kyle faced an incumbent obstacle.
"The current head coach also had a junior son on the team who played shortstop and pitcher," said Coach Toney. "Kyle had to go out there and prove himself all over again."
Meanwhile, another senior catcher stood in the way of Kory's chance to be on the varsity.
After the first year at Alvarado, Toney had his chance to do what neither of his current Glen Rose colleagues had the chance to do - coach two sons on the same team.
In Kyle's senior season, Kory made the varsity roster as the battery mate to his older brother.
"(That year) was great," said Coach Toney. "We're already so family-oriented anyway that not much changed, but nothing can replace the time we all spent on the field together, especially when Kyle was pitching and Kory was behind the plate."
Toney's fondest memories of coaching his sons were, first, Kory's senior year because "it was my last son's last season." Whereas, the coach's fondest memory of Kyle had a little something extra.
"My fondest memory of Kyle came when he played in a high school all-star game," said Coach Toney. "Because it just happened to be the 25th anniversary from the time I played in it."
Since graduation, Kyle attempted to further his playing career at Mary Hardin Baylor and Western Texas College in Snyder, but a knee injury forced him to call it a career. He was recently named the head baseball coach at East Chambers High School in Winnie.
Kory also went to college with the intent to play baseball at WTC, but after two years he left the team to pursue a career in the U.S. Navy.
Coach Toney will enter his eighth season as the head baseball coach at Glen Rose High School. He has led the Tigers to the playoffs in six of those seasons.
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With a strong supporting cast of fathers who double as coaches, future Tiger coaches with sons in the program will have plenty of support.
A pair of GRHS coaches have sons entering high school in the fall - Todd Swearengin and Greg Garrison.
"It's a unique opportunity," said Swearengin, father of Hayden. "Coaches never coach their own sons the same, they're eaither harder or easier on them. It's probably not fair to the kids, but that's that way it is.
"That's a good question. I don't really know," said Swearengin when asked how he plans to seperate his roles as dad and coach. "I'm just going to try to not take it home with me. I'll have to coach on the field and dad at home."
Whether it's coach, dad or Coach Dad, the coaching staff at Glen Rose High School has always had the best interest of their students at heart - their own child or not.