A Thursday night AFC West showdown between the Kansas City Chiefs and Denver Broncos was marred by a frightening injury to reigning NFL MVP Patrick Mahomes. The Chiefs came into this matchup looking to bounce back at Empower Stadium after two straight losses and ultimately came away with the 30-6 win, their eighth consecutive win against the Broncos. They improved to 5-2, while Denver falls to 2-5 on the year.

Here are five things you need to know for fantasy football:

1. Patrick Mahomes injures knee on attempted quarterback sneak

Mahomes had to be helped off the field after a failed quarterback sneak attempt on 4th-and-1 during the second quarter. The play call was questionable given that he had been dealing with a left ankle injury entering this game. He limped off the field visibly in pain, was taken to the x-ray room, and was ruled out for return by the team minutes later.

On replay, it appeared that the Chiefs trainers popped Mahomes’ right knee back into place on the field. It was later confirmed that he suffered a right patellar dislocation and will undergo an MRI exam on Friday to assess any ligament damage, per ESPN’s Stephania Bell.

Adam Schefter reported that a league source said “if there’s no damage, the best case would be around three weeks.” He was immediately replaced by former Dolphins quarterback Matt Moore and tweeted after the game to congratulate the team on their win and said, “everything looking good so far.”

If this injury forces Mahomes to miss significant time, it would be a massive blow to the Kansas City offense. The Chiefs pass catchers, Tyreek Hill, Travis Kelce, Sammy Watkins, Mecole Hardman, Demarcus Robinson, and Byron Pringle, would be most affected, with marginal effects on running backs LeSean McCoy and Damien Williams. The only silver lining for fantasy owners is that the quarterback position is very deep this year. To mitigate the risk of fighting others during waivers next Tuesday, Mahomes owners should consider picking up Jacoby Brissett, Josh Allen, or Sam Darnold this week.

2. Royce Freeman scores lone Broncos touchdown, Phillip Lindsay stymied

Running back Royce Freeman scored the lone Broncos touchdown of the evening on the first drive of the game. Freeman had ten attempts for 35 yards and four catches for 32 yards. The Broncos were unable to get momentum going on the ground (or in the air) while Phillip Lindsay was also held to a mere 36 yards on 11 attempts and one catch for negative four yards: a disappointing outing given how favorable this matchup was.

3. Broncos miffed as Joe Flacco is outplayed by Matt Moore

The Broncos scored a touchdown on the first drive of the game and proceeded to allow 30 unanswered points. This is a shocking showing opposite a Chiefs defense that had looked abysmal. After Freeman’s touchdown, the Broncos had seven punts, two turnovers on downs, a fumble returned for a touchdown and a missed field goal. Flacco had little pocket awareness and was sacked eight times. He attempted 34 passes for 21 completions, 213 yards and zero touchdowns, and at times looked markedly worse than Chiefs backup Matt Moore.

Moore entered the game in the second quarter after Mahomes went down and attempted 19 passes for 10 completions, 117 yards and a touchdown. He connected with Hill for a 57-yard touchdown in the third quarter. Neither Flacco nor Moore are fantasy relevant even in two-quarterback leagues.

4. Chiefs pass rush attacks Flacco and permeable Broncos offensive line

After much ado about how poorly the Chiefs defense has played, they came out with a vengeance and sacked the Broncos six times in the first half. They had nine sacks on the evening and allowed six points on one touchdown (failed two-point conversion). While impressive, this is more of an indictment of the Broncos offensive line woes, as the Chiefs did not pick up a single sack on Deshaun Watson during last Sunday’s game against the Texans. Flacco, or whomever is under center in Denver moving forward, cannot have success if their pass protection makes every opponent look like the ’85 Bears.

5. Courtland Sutton and Emmanuel Sanders salvage their evenings

Broncos receivers Courtland Sutton and Emmanuel Sanders played well despite Flacco’s mediocrity. Sutton, a former 2018 second-round draft pick from SMU, was targeted eight times for six catches and 87 yards. He caught a number of questionable passes from Flacco, nabbing a 41-yarder during the second quarter.

After days of uncertainty if he would suit up due to a knee issue, Sanders was removed from the Wednesday injury report and was active for this game. He had a quieter evening than Sutton and and was targeted six times for five catches and 60 yards and appeared healthy.