Who was that?! Unheralded ballers who mattered in Week 9

Sometimes the NFL's top plays on Sunday come from people we wouldn't expect. They're the plays that make you ask, "Who was that?" These performances can change a player's career.

Here's a look at Week 9's unheralded ballers, starting with a few undrafted players making a special impact:

Corey Clement, RB, Philadelphia Eagles

Three total TDs -- two rushing, one receiving -- in 51-23 rout of the Broncos

What happened: While we wondered how Jay Ajayi and LeGarrette Blount would split reps, it was Clement who had the biggest day of the Philly backs, scoring three total touchdowns off 13 touches and 66 yards.

Why it matters: Clement, an undrafted rookie, is establishing himself as another weapon in the NFL's best offense, which is full of creativity and diverse playmakers. It's fun to watch and a nightmare to defend.

Jaydon Mickens, WR/PR, Jacksonville Jaguars

63-yard punt return touchdown in fourth quarter of 23-7 win over Bengals

What happened: On just his second return of the season, Mickens broke a few tackles, and then his speed took over as he raced on the left sideline. Mickens, a 2016 undrafted free agent who has been on the Jaguars' roster for just two games, gets extra points for flipping into the end zone.

Why it matters: It shows that the Jaguars can manufacture points in all three phases -- and that the team can pick up the offense on a day when Leonard Fournette was suspended. It'll also be big for Mickens' long-term NFL future.

Justin Hardee, DB, New Orleans Saints

Blocked punt returned for TD in first quarter of 30-10 win over Bucs

What happened: Hardee shed a block to come free across the middle and block a Tampa Bay punt. He nabbed the ball off the bounce and returned it for the touchdown.

Why it matters: This is a rookie undrafted player who was fighting to get on a practice squad in September, when the Saints signed him and converted him to a defensive back. He has since become a key special-teamer, and he made the biggest play of his career on Sunday.

Brian Quick, WR, Washington Redskins

31-yard catch during game-winning drive of 17-14 victory over Seahawks

What happened: Quick had three catches for 49 yards, but his play of the game came in the clutch, as he made a terrific adjustment to snag a 31-yard reception that led to Washington's winning touchdown.

Why it matters: The Redskins were down several starters on the offensive line and in the receiving corps, but Quick, like his team, stepped up and did just enough to grind out a much-needed win. This team won't quit.

Tyler Higbee, TE, Los Angeles Rams

Opening TD in 51-17 rout of the Giants

What happened: Higbee, a second-year tight end, fought off a Giants linebacker to catch his first career touchdown.

Why it matters: Jared Goff and the Rams' offense is on fire. Getting Higbee in the end zone might open up things up for the Rams' other receivers. Plus, he'll always remember his first.

ESPN NFL Nation reporters Tim McManus, Michael DiRocco, Mike Triplett, John Keim, Alden Gonzalez contributed to this story.