The Bills had three first-half turnovers, but are still tied 10-10 with the Chargers at halftime.
Josh Allen powered his way into the end zone on a tush push late in the second quarter to tie the score.
Allen had connected with Keon Coleman for a 37-yard pass down to the 1-yard line that set up the score.
That helped erase some sloppy play from the Bills for much of the first half. James Cook fumbled on the first possession for a turnover. Then Josh Allen threw a pair of interceptions.
But the Chargers could only manage 10 points off of the turnovers, with Cameron Dicker missing a 45-yard field goal wide left after Allen’s interception.
Allen is 10-of-17 for 112 yards with a pair of picks. James Cook has 10 carries for 59 yards.
On the other side, Justin Herbert is 9-of-16 for 85 yards with a touchdown.
The Chargers will receive the second-half kickoff.