Jaylen Wright

A pair of low-round injury replacements stole the show in Week 5, as rookie RBs Tyrone Tracy Jr. and Jaylen Wright led their teams to wins.

Wright saw extended run in Week 5 after De'Vone Achane was ruled out of the game with a brain injury he suffered in the first quarter. Wright out-rushed Raheem Mostert despite Mostert seeing 18 rushing attempts on the day. Wright appeared explosive throughout, notching a 6.6 yards per carry and looking a lot like Achane at times. Wright should be rostered in all fantasy leagues in case Achane misses time following Miami's Week 6 bye.

Mostert took over as Miami's lead back with De'Vone Achane sidelined with a brain injury. Coming off a chest injury, Mostert looked as explosive as ever, ripping off a few lengthy runs, including an 18-yarder in the second half. Jaylen Wright had 13 rushes behind Mostert in an extremely run-heavy game plan. Achane will have the bye week to clear the league's concussion protocol, but if he doesn't, Mostert would be a top-12 fantasy option in Week 7.

Dolphins RB De'Von Achane left in the first quarter of Sunday's game vs. the Patriots for a concussion check. He's officially questionable to return. Stay tuned for an update. Update: Achane has been ruled out. It's his first documented concussion. Raheem Mostert and Jaylen Wright will handle backfield duties the rest of the way.

He looked to be favoring his ankle at one point, and Jaylen Wright got plenty of run behind him. Achane simply had no prayer in this offense, and came up short of the goal-line on two carries that could have salvaged his fantasy day in the fourth quarter. It's hard to call Achane anything more than a low-end RB2 without Tua Tagovailoa, and that will be the case again in Week 5 against the Patriots.