Who was that?!? Unheralded ballers who made a difference in Week 12

Shelby Harris (96) celebrates after his victory-sealing interception against the Steelers in Week 12. Justin Edmonds/Getty Images

We all know the NFL stars who generate SportsCenter highlights on a regular basis. Every week, though, some performances make us say, "Who was that?"

It could be the undrafted rookie receiver who catches a long touchdown pass, the backup quarterback who piles up stats or the journeyman linebacker who seals a win with a big play.

This is for them.

Take a look at Week 12's unheralded ballers, starting with a Broncos defensive lineman who made a game-sealing play worthy of a game ball to give to his newborn daughter and a Browns cornerback who hilariously gifted his former head coach -- Bengals assistant Hue Jackson -- the ball after an interception.

Shelby Harris, DL, Denver Broncos

Interception in end zone to seal 24-17 win over Steelers

Why it matters: It was an emotional week for Harris, whose wife delivered a baby on Friday and made the play to keep the Broncos' playoff hopes alive on Sunday. On third-and-goal with less than two minutes left, Steelers quarterback Ben Roethlisberger threw the ball across the middle, where Harris -- was being blocked at the time -- snagged it out of the air for an interception and a touchback to seal a win. Harris, a rotational defensive lineman who had been waived six times in his career before sticking with the Broncos last season, got to take the game ball home to his wife and new daughter.

Damarious Randall, DB, Cleveland Browns

Interception in 35-20 win over Bengals

Why it matters: Randall gave the Bengals bulletin board material this week when he said, "If they don't have A.J. [Green], they're getting their ass beat." Well, Green didn't play and the Browns backed up Randall's claim. Randall even made a highlight play of his own. After an interception of Andy Dalton near the sideline, Randall ran to Jackson and handed him the football. After the game, Randall said: "I felt he needed one." Randall, a 2015 first-round pick that Green Bay traded away this offseason, is the savage defensive back that the new-era Browns need.

David Moore, WR, Seattle Seahawks

Career-high 104 receiving yards and game-tying TD in 30-27 win over Panthers

Why it matters: Moore burst onto the scene in recent weeks as a dangerous big-play weapon, and he had his biggest day yet, eclipsing 100 yards. With the game on the line on fourth-and-3 as Seattle trailed by seven late in the fourth quarter, Russell Wilson found Moore down the sideline and in the end zone for a 35-yard touchdown. On an earlier TD by fellow receiver T.J. Lockett, Moore joined in the celebration to re-create the Allen Iverson step-over move over Tyronn Lue back in the 2001 NBA Finals. Extra bonus points for creativity.

Matthew Judon, OLB, Baltimore Ravens

Three sacks in 34-17 win over Raiders

Why it matters: Judon became the first player in 12 years to record sacks on three consecutive plays. He forced a fumble on his first sack that was returned by Terrell Suggs for a touchdown. The 2016 fifth-round pick has outplayed his draft stock to become a solid contributor for the Ravens.

Robert Foster, WR, Buffalo Bills

75-yard TD in 24-21 win over Jaguars

Why it matters: An undrafted rookie, Foster led the Bills in receiving (94 yards) for a second consecutive game after being promoted from the practice squad. With seven catches this season for 229 yards, Foster has more receiving yards in his first NFL season than he did in any of his four seasons at Alabama. Foster played more snaps (33) Sunday than former No. 1 receiver Kelvin Benjamin (23).

Leonte Carroo, WR, Miami Dolphins

74-yard TD reception in 27-24 loss to the Colts

Why it matters: No. 5 receivers becoming strong candidates to appear on the ESPN Sunday NFL Countdown "You Got Mossed" segment get major love on the unheralded ballers team. Carroo, a 2016 third-round pick who has been mainly a special-teams player this season, made the biggest play of his season, leaping over Colts cornerback Pierre Desir to catch a jump ball and galloping into the end zone for a TD. His play tied the game and brought a deep-ball element to a Miami offense that it has lacked for several weeks.

NFL Nation reporters Jeff Legwold, Brady Henderson, Jamison Hensley and Mike Rodak contributed to this story.