The Wildcats, now 11-2, face Southlake Carroll, 10-3, in a quarterfinal matchup Saturday. Denton Guyer won 28-14 in the final regular season game to end Southlake Carroll's 47-game home winning streak. Walsh threw for two touchdowns and added a 9-yard scoring run in that victory.
"It's exciting," Walsh said on Sunday. "As a team we've been here two years in a row now. Last year we played Denton Ryan, who we also played in the last game of the season last year, and we had lost that game. We came into that game last year and we had a lot of pride in our heart and won. That's what we're expecting from Southlake to come out and play like this week."
Denton Guyer is participating in Class 5A for the first time this season after reaching the Class 4A Division I semifinals a year ago.
The 6-3, 190-pound Walsh would like nothing better than to wrap up his high school career by winning a gold ball and then enrolling at Oklahoma State in January for the spring semester.
He stayed around to watch the first half of Southlake Carroll's 38-24 victory over Abilene after his playoff victory Saturday before returning home to watch the Bedlam battle at Boone Pickens Stadium.
"I was watching it. I didn't feel very good after the (playoff) game so I feel asleep in the fourth quarter ... but then I woke up and saw the score," said Walsh, who woke to find a surprise waiting for him.
"My car was written all over with ‘Boomer Sooner' and had a bunch of red on it, and my dad's car as well," Walsh said with a laugh. "I have a lot of friends on the team that are OU fans, and I made some bets with them. Of course, I lost but it's all in good fun."
Walsh said he spoke briefly with Abilene High School's Herschel Sims before his playoff game, and was impressed with the play of the running back who also has given a verbal commitment to Oklahoma State.
"He looked very good in the first half (while I was there). He looked real fast, real explosive even coming off the ankle injury. Coming off the ankle injury he looked really good running the football. It was exciting to see," said Walsh of Sims, who ran for a season-best 187 yards and two touchdowns in his final high school football game.
Walsh says he still keeps in touch with Sims via texting and Facebook, and still considers him an OSU commitment despite recent rumors that he may be wavering and interested in visiting TCU.
"Actually Herschel played right after us (Saturday). I saw him right before their game and I talked to him and told him good luck. Me and Herschel stay in touch, and Travis Cross as well," Walsh said.
"I haven't talked to him about (his commitment) just because we're so busy with the playoffs and I didn't want to bother him while he's focused on his team and stuff. When my season ends, whenever that is, I'll probably get in touch with him about it. I still feel like he's a Cowboy, and I still feel pretty strong about his commitment even though there is some speculation out there about it. I still think he's a strong Cowboy."
Here are Walsh's season stats through 13 games this season:
Passing: 155 of 250 (62.0 percent) for 2,730 yards with 28 touchdowns and two interceptions
Rushing: 134 carries for 1,073 yards (8.01 per carry) for 13 touchdowns
OSU Commitment List