Fresh off their bye week, the Los Angeles Chargers (4-7) will look to get back on track after losing their past two consecutive games in a matchup against the Denver Broncos (3-8).

Here are four key things to know prior to the Week 13 bout.

Decision on quarterback is up in the air

The last time the Chargers played the Broncos, veteran Joe Flacco was behind center. That won’t be the case this weekend as Flacco is currently nursing an injury, which has put him out for the past few weeks.

In place of Flacco has been Brandon Allen, who is 1-2 since taking over as Denver’s starter. But rookie Drew Lock, who has returned from the injured reserve, could make his professional regular season debut.

Lock has practiced the past three weeks, but the Broncos have continued to roll with Allen to ensure that the first-year player’s thumb is feeling 100%.

“We’re going to up Drew’s reps this week extensively in practice, see how he does with this, and then make a decision prior to the game. The earliest (the decision) would be made would be later in the week, right up until the game,” coach Vic Fangio said.