San Diego Chargers quarterback Philip Rivers calls a play at the line of scrimmage during the first half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

San Diego Chargers quarterback Philip Rivers (17) hands the ball off during the first half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Jim Mone)

San Diego Chargers running back Melvin Gordon (28) runs from Minnesota Vikings defensive back Michael Griffin (33) during a 39-yard touchdown run in the first half of an NFL preseason football game Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

San Diego Chargers running back Melvin Gordon, right, runs from Minnesota Vikings cornerback Trae Waynes, left, during a 39-yard touchdown run in the first half of an NFL preseason football game Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Jim Mone)

San Diego Chargers quarterback Philip Rivers throws a pass during the first half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

San Diego Chargers running back Melvin Gordon, left, is tackled by Minnesota Vikings outside linebacker Chad Greenway (52) during the first half of an NFL preseason football game Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

San Diego Chargers head coach Mike McCoy watches from the sidelines during the first half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

San Diego Chargers running back Melvin Gordon (28) celebrates with teammates after scoring on a 39-yard touchdown run in the first half of an NFL preseason football game against the Minnesota Vikings, Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

San Diego Chargers running back Melvin Gordon runs up field during a 39-yard touchdown run in the first half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

San Diego Chargers quarterback Philip Rivers (17) drops back to pass during the first half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Jim Mone)

San Diego Chargers tackle King Dunlap, right, blocks Minnesota Vikings defensive end Danielle Hunter, left, during the first half of an NFL preseason football game Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Jim Mone)

San Diego Chargers running back Danny Woodhead, left, runs from Minnesota Vikings outside linebacker Anthony Barr, right, during the first half of an NFL preseason football game Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Jim Mone)

San Diego Chargers quarterback Philip Rivers, center, talks with teammates on the sidelines during the first half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

San Diego Chargers quarterback Kellen Clemens (10) scrambles up field during the first half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Jim Mone)

San Diego Chargers cornerback Craig Mager stands on the field during the second half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Jim Mone)

San Diego Chargers running back Melvin Gordon carries the ball during the first half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

San Diego Chargers running back Melvin Gordon celebrates with fans after a 39-yard touchdown run during the first half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

San Diego Chargers defensive back Dexter McCoil waits on the line of scrimmage during the second half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Jim Mone)

Minnesota Vikings tight end Kyle Rudolph (82) is tackled by San Diego Chargers' Manti Te'o, left, and Melvin Ingram, right, during the first half of an NFL preseason football game Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

San Diego Chargers quarterback Kellen Clemens (10) throws a pass during the first half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

San Diego Chargers cornerback Jason Verrett walks on the field during the first half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Jim Mone)

San Diego Chargers wide receiver Tyrell Williams runs up field after making a reception during the first half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

San Diego Chargers linebacker Shaq Petteway waits on the line of scrimmage during the second half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Jim Mone)

San Diego Chargers quarterback Philip Rivers looks to throw a pass during the first half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)

Minnesota Vikings wide receiver Troy Stoudermire (1) is tackled by San Diego Chargers outside linebacker Tourek Williams, lower right, during the second half of an NFL preseason football game Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Jim Mone)

San Diego Chargers quarterback Kellen Clemens (10) drops back to pass during the second half of an NFL preseason football game against the Minnesota Vikings Sunday, Aug. 28, 2016, in Minneapolis. (AP Photo/Andy Clayton-King)