Titans: Johnson: 'We didn't look like an NFL team'

"Not just the running game but the offense as a whole did not look good and we didn't look like an NFL team," Johnson said.

Tight end Dante Rosario had three touchdown catches for the first time in his NFL career to lead the Chargers.

San Diego's defense harassed Jake Locker and all afternoon and bottled up Johnson.

"I think it's frustrating that we just can't make more than a couple plays in a row, defense or offense," coach Mike Munchak said.

It was a rough day all around for the Titans, who were held to 212 yards of total offense. Johnson had only 17 yards on eight carries. He was coming off a career-low 4 yards on 11 carries in a 34-13 loss to New England.

Locker was 15 of 30 for 174 yards.

Before the game, the Chargers (2-0) retired Junior Seau's No. 55. Seau, the hard-hitting, first-pumping leader of the Chargers for 13 seasons, committed suicide May 2.

With Antonio Gates inactive due to sore ribs, the Chargers turned to Rosario, who signed as a free agent in March. He responded with TD catches of 11, 4 and 15 yards from Philip Rivers.

Rosario had only five career scoring catches coming in, his last in 2009. He had a game-winning touchdown catch against San Diego in the 2008 season opener while with Carolina.

San Diego's winning streak against the Titans (0-2) dates to 1993, when the franchise was still the Houston Oilers.

Rivers was 24 of 32 for 284 yards. Malcom Floyd had six catches for 109 yards and Rosario four catches for 48 yards.

Rosario hurt his right calf in the second quarter and went to the locker room but later returned.

Rivers appeared to have his fourth TD pass of the afternoon, a 6-yarder to running back Ronnie Brown early in the fourth. But after review, Brown was ruled down inside the 1. Jackie Battle leaped over the pile on the next play to give the Bolts a 31-10 lead.

Battle added another 1-yard scoring run later in the quarter.