The Indianapolis Colts (6-5) have been going down a slippery slope over the past month or so and will host the Tennessee Titans (6-5) at Lucas Oil Stadium for a Week 13 matchup.

While the Colts have been sliding, losing three of their last four games, there is still some optimism pertaining to a potential win on Sunday against the Titans.

Here are three reasons for optimism in Week 13:

Defense has been improving

While the opposing offenses haven’t been top-tier units, the Colts defense appears to be rounding into form. From Justin Houston generating strong pressure to the secondary really picking up their game, the defense has become a solid and dependable unit.

The Colts will need that trend to continue against the Titans on Sunday as the latter has seen a resurgence on the offensive side of the ball since Ryan Tannehill took over as the starter in Week 7.

Run defense has been stout

One of the biggest keys for the Colts on Sunday will be stopping Titans running back Derrick Henry. The former second-round pick in 2016 has been enjoying a career year to the tune of 206 carries for 991 yards and 10 touchdowns.

While Henry has been tearing it up against opposing defenses with six total touchdowns in the last three games, the Colts have been equally stout against the run. They haven’t allowed 100 rushing yards to a team in the last four games and have truly made strides to improve the run defense.

Getting healthier?

Though we won’t know until the final injury report comes out on Friday, but the Colts seem like they are getting healthier. Wide receivers T.Y. Hilton and Parris Campbell appear to be on the mend while rookie defensive backs Khari Willis and Rock Ya-Sin could be in line to return after missing Week 12.

Health has been a big problem for the Colts this season on both sides of the ball. If they are truly getting healthier, they should have an easier time competing in this game.