Houston Texans rally from 21 down to stun San Diego Chargers 31-28

photo Houston Texans tight end Owen Daniels scores past San Diego Chargers linebacker Bront Bird during the second half of an NFL football game in San Diego.

SAN DIEGO - Randy Bullock kicked a 41-yard field goal as time expired, and the Houston Texans rallied from a 21-point deficit in the second half for a 31-28 victory over the San Diego Chargers on Monday night.

Brian Cushing returned an interception 18 yards for the tying touchdown with 9:30 to play for the Texans, who roared back from a 28-7 deficit late in the third quarter to spoil the debut of San Diego coach Mike McCoy.

Matt Schaub threw a tipped interception on Houston's first play of the season, but recovered to pass for 346 yards and three TDs. He calmly engineered the final 36-yard drive to set up Bullock, who coolly nailed his NFL field goal.

Philip Rivers threw four touchdown passes as the Chargers gave their fans a tantalizing start under McCoy - and an agonizing reminder of last season, when they blew five halftime leads.

Upcoming Events