Oklahoma spring game: What we learned

NORMAN, Okla. -- Oklahoma's quarterback derby remains wide open.

None of the quarterbacks in the Sooners quarterback competition separated themselves as the Red defeated the White, 20-7, in Oklahoma's Red-White spring game on Saturday in Norman, Oklahoma. Here's what we learned in the Sooners spring game:

1. The quarterback battle could last deep into the preseason: Some expected Baker Mayfield to cement his spot as the favorite to win the Sooners starting quarterback job on Saturday. Instead, the competition looks as wide open as ever after all four quarterbacks (Mayfield, Trevor Knight, Cody Thomas and Justice Hansen) threw interceptions and made questionable decisions at various times. Mayfield, the Texas Tech transfer, completed 10 of 13 passes for 176 yards with one touchdown but had two interceptions. Knight, OU's starter in the 2014 season opener, didn't fair much better taking care of the ball, finishing 6-of-13 for 78 yards with one interception. Every quarterback had their good moments and good throws on Saturday. But, ultimately, the winner of the job will be the guy who focuses on taking care of the ball and always making good decisions. None of the four can say they did that on Saturday.

2. Up and down debut for Lincoln Riley's offense: The Sooners new offensive coordinator kept things very vanilla during the public unveiling of his version of the Air Raid offense, but there were flashes of the explosiveness Riley's offense will strive for -- from a receiver reverse to DeDe Westbrook to slip screens to various receivers -- once the fall rolls around and the full offense is on display. Riley's offense turned the ball over six times but scored three touchdowns and offered several big plays in the passing and running game.

3. Sooners' receivers should be more productive in 2015: OU's passing game fell apart when All-Big 12 receiver Sterling Shepard was injured in 2014. If Saturday's performance is any indication, the Sooners should have the receiving options to withstand the loss of any single pass-catcher in 2015. Westbrook flashed the big-play ability that has made him the buzz name of spring with a 22-yard run on a reverse and 28-yard reception on a slip screen. His speed and quickness will be an asset this fall. Receiver Mark Andrews, another spring star, showed his combination of size and strength with a pair of receptions for 56 yards. All told, 16 different receivers had a reception with Jeffery Mead's four receptions (for 93 yards) ranking as the best on the squad. The distribution of the ball to several different targets is a trademark of Riley's attack.

4. Could Daniel Brooks force himself onto the field? The junior running back was an afterthought as spring football opened. Yet he could force Riley to find a spot for him in his offense if he continues to show the speed, change of direction and versatility he showed on Saturday. Brooks finished with 21 carries for 154 yards (7.3 average) and three receptions for 40 yards to cement a spot as the most productive offensive player in the game. Nonetheless, All-Big 12 running back Samaje Perine and highly-regarded redshirt freshman Joe Mixon stand as huge obstacles on Brooks roadway to transforming his spring success into fall playing time.

5 The interceptions aren't all bad: The pitfalls of Riley's attack reared its head in the spring game with five interceptions in 43 total pass attempts from the quarterbacks. It's a bad sign in the search for a consistent decision maker under center but it's a great sign for a Sooners secondary that was widely criticized after a horrible showing in 2014. Safeties Ahmad Thomas and Hatari Byrd joined cornerbacks William Johnson and Jordan Thomas with one interception each (linebacker Curtis Bolton had the other interception). There were times last year when OU's defenders had the opportunity to make plays, like interceptions, but simply did not. On Saturday, the Sooners defenders took advantage of those opportunities.