Instead Brown stepped forward, reacting to Oklahoma`s quick-strike offense, and Sooners` receiver Ryan Broyles slipped past him for a touchdown.
It took three drives -- a little more than a quarter -- but the Sooners` up-tempo offense eventually got the best of Colorado as the Buffaloes remained winless in Big 12 play with a 43-10 loss.
"They had a lot of success doing a lot of things," coach Dan Hawkins said. "We did a good job of keeping them out of the end zone on their first few drives. They were pretty efficient. They did a nice job schematically and obviously have players."
Colorado (3-5 overall, 0-4 Big 12) held Oklahoma to six points on the Sooners` first three drives, but the Oklahoma offense finally broke Colorado in the second quarter.
Broyles` 16-yard touchdown grab behind Brown was just the start. Five minutes later, Broyles found a mismatch, which could have been avoided, and took advantage. Backup cornerback Jonathan Hawkins was left in single coverage with Broyles. Unable to keep up with the All-Big 12 receiver, Hawkins watched Broyles run past for an 81-yard touchdown.
"They got some big plays and got us in a couple mismatches," Hawkins said. "Big plays. Our defense did a decent job holding them to a couple field goals early on, then we got kind of gashed a little bit.
The Sooners (7-1, 3-1) scored again seconds before halftime. No mismatch this time, just 48 yards in a quick 1:01. By the time the flurry was finished, Oklahoma had scored a touchdown on three of four possessions and gained 232 yards to close the first half.
"We had some big passes they got on us and that was tough," defensive tackle Will Pericak said. "They made plays when they really needed to."
The halftime break didn`t help. Less than a minute into the second half, Broyles struck again. Safety Ray Polk was the victim of a middle seam route and a 64-yard touchdown pass.
"We tried for the most part in most of the coverages to try and put Jimmy (Smith) inside with him or try and put Jalil (Brown) inside on him," Hawkins said. "He got (Jonathan Hawkins) on the one. You`ve gotta make sure you don`t get lined up that way."
Everything the Sooners did Saturday night was fast. Even a 96-yard touchdown drive in the third quarter took less than four minutes.
"Baylor was fast, Texas Tech was fast, coming into this game we knew they were fast," Pericak said. "They were probably the fastest team we`ve played."