South Oak Cliff defied that logic against McKinney on Saturday.
After leading the entire game, South Oak Cliff gave up a 10-0 McKinney run late in the fourth quarter but hit enough free throws down the stretch to hang on for a 80-75 win in the first high school basketball game played at American Airlines Center.
South Oak Cliff (28-7) advances to take on Dallas Lincoln in the Class 4A Region II quarterfinals Tuesday at Ellis Davis Field House.
"We knew it was coming," South Oak Cliff coach James Mays said. "We knew they were going to make a run. We were just trying to get as big a lead as we could so we could withstand the run when it came. Thank God we had just enough."
McKinney (20-12) couldn't keep up with a more athletic South Oak Cliff team through 25 minutes and trailed by 18 in the third quarter, but the Lions ripped off a 10-0 run to cut the Golden Bear lead to 72-69 with 2:54 to play.
The Lions had the ball four times with a chance to tie it or take the lead, but they never got a shot off that would do either.
On two of those possessions they were fouled and on another South Oak Cliff's Jamaal Robateau made a vicious block on a layup attempt that would have tied the score.
With less than a minute remaining, the Lions couldn't quite keep possession of a rebound after South Oak Cliff missed a free throw that would have made it a two-possession game. The ball went off a Lion and out of bounds, and McKinney never got another chance.
"We've been in these positions all year," Mays said. "We've taken our lumps from them and we've also benefited from them. We didn't panic. We missed some free throws but we didn't panic."
South Oak Cliff survived despite the brilliance of McKinney's Red Shannon and A.J. Moutry. Shannon lead all scorers with 27, including nine of McKinney's last 11 points. Moutry added 14.
Bryan Umoru and Dennis Jones paced South Oak Cliff with 17 while Christopher Hyder scored 13.