San Francisco 49ers quarterback Blaine Gabbert (2) throws during the NFL preseason game between the Denver Broncos and the San Francisco 49ers on Sunday, Aug. 17, 2014 at the Levi's Stadium in Santa Clara, Calif. (Ric Tapia/NFL)

Denver Broncos quarterback Brock Osweiler (17) drops back during the NFL preseason game between the Denver Broncos and the San Francisco 49ers on Sunday, Aug. 17, 2014 at the Levi's Stadium in Santa Clara, Calif. (Ric Tapia/NFL)

Denver Broncos quarterback Brock Osweiler (17) throws during the NFL preseason game between the Denver Broncos and the San Francisco 49ers on Sunday, Aug. 17, 2014 at the Levi's Stadium in Santa Clara, Calif. (Ric Tapia/NFL)

Denver Broncos tight end Jacob Tamme (84) reaches for the end zone during the NFL preseason game between the Denver Broncos and the San Francisco 49ers on Sunday, Aug. 17, 2014 at the Levi's Stadium in Santa Clara, Calif. (Ric Tapia/NFL)

Denver Broncos quarterback Brock Osweiler (17) celebrates during the NFL preseason game between the Denver Broncos and the San Francisco 49ers on Sunday, Aug. 17, 2014 at the Levi's Stadium in Santa Clara, Calif. (Ric Tapia/NFL)

San Francisco 49ers quarterback Colin Kaepernick (7) passes against the Denver Broncos during the first quarter of an NFL preseason football game in Santa Clara, Calif., Sunday, Aug. 17, 2014. (AP Photo/Ben Margot)

San Francisco 49ers inside linebacker Chris Borland (50) tackles Denver Broncos running back Ronnie Hillman (23) during the second quarter of an NFL preseason football game in Santa Clara, Calif., Sunday, Aug. 17, 2014. (AP Photo/Marcio Jose Sanchez)

Denver Broncos quarterback Peyton Manning (18) signals at the line of scrimmage during the first quarter of an NFL preseason football game against the San Francisco 49ers in Santa Clara, Calif., Sunday, Aug. 17, 2014. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers players walk onto the field at Levi's Stadium before an NFL preseason football game against the Denver Broncos in Santa Clara, Calif., Sunday, Aug. 17, 2014. (AP Photo/Marcio Jose Sanchez)

San Francisco 49ers wide receiver Bruce Ellington (3) is tackled by Denver Broncos strong safety David Bruton (30) and cornerback Omar Bolden (31) during the third quarter of an NFL preseason football game in Santa Clara, Calif., Sunday, Aug. 17, 2014. (AP Photo/Marcio Jose Sanchez)

Denver Broncos wide receiver Cody Latimer, right, is congratulated by offensive tackle Michael Schofield after scoring on a 33-yard touchdown pass from quarterback Brock Osweiler during the third quarter of an NFL preseason football game against the San Francisco 49ers in Santa Clara, Calif., Sunday, Aug. 17, 2014. (AP Photo/Ben Margot)

San Francisco 49ers quarterback Colin Kaepernick (7) passes against the Denver Broncos during the first half of an NFL preseason football game in Santa Clara, Calif., Sunday, Aug. 17, 2014. (AP Photo/Ben Margot)

Denver Broncos quarterback Peyton Manning (18) passes against the San Francisco 49ers during the first half of an NFL preseason football game in Santa Clara, Calif., Sunday, Aug. 17, 2014. (AP Photo/Ben Margot)

San Francisco 49ers quarterback Blaine Gabbert (2) passes against the Denver Broncos during the first half of an NFL preseason football game in Santa Clara, Calif., Sunday, Aug. 17, 2014. (AP Photo/Marcio Jose Sanchez)

Fans watch as the San Francisco 49ers play the Denver Broncos during the first half of an NFL preseason football game at Levi's Stadium in Santa Clara, Calif., Sunday, Aug. 17, 2014. (AP Photo/Tony Avelar)

In this photo taken with a fisheye lens, fans at Levi's Stadium watch as the San Francisco 49ers play the Denver Broncos during the first half of an NFL preseason football game in Santa Clara, Calif., Sunday, Aug. 17, 2014. (AP Photo/Tony Avelar)

San Francisco 49ers head coach Jim Harbaugh watches from the sideline during the second half of an NFL preseason football game against the Denver Broncos in Santa Clara, Calif., Sunday, Aug. 17, 2014. (AP Photo/Marcio Jose Sanchez)

Denver Broncos tight end Jameson Konz (82) is tackled during the NFL preseason game between the Denver Broncos and the San Francisco 49ers on Sunday, Aug. 17, 2014 at the Levi's Stadium in Santa Clara, Calif. (Ric Tapia/NFL)