The Dolphins have signed RB Alexander Mattison.

Fantasy Impact

Mattison will likely enter training camp competing for a backup role behind De'Von Achane. Fantasy managers should expect the veteran to see limited touches to kickoff the season.

Alexander Mattison rushed for 20 yards on six carries in the Raiders 34-20 loss to the Chargers. He caught 4-of-5 targets for 11 yards.

Fantasy Impact

Mattison split time with Chris Collier in the backfield for the Raiders final game of the season. He will finish the season with 420 rushing yards and four touchdowns on 132 rushing yards.

Alexander Mattison rushed for 32 yards on 10 carries in the Raiders 25-10 win over the Saints. He caught 1-of-3 targets for six yards.

Fantasy Impact

Mattison saw Ameer Abdullah take the bulk of the carries for the Raiders Sunday. The 26-year-old will likely serve as the No. 2 running back in the Raiders' Week 18 matchup with the Chargers.

Alexander Mattison ran for 27 yards and a touchdown on 12 carries in the Raiders 19-14 win over the Jaguars. He also caught 4-of-7 targets for 29 yards receiving.

Fantasy Impact

Mattison put the Raiders on the board to start the second quarter. He led the backfield in carries, but Ameer Abdullah was more efficient on the ground. He'll remain a volatile flex play next week against the Saints.

Alexander Mattison (neck) fully practiced for the Raiders on Wednesday.

Fantasy Impact

Mattison suffered a neck injury in Sunday's loss to the Falcons, but it's not a serious issue and he was able to log a full practice on Wednesday. He should be good to go and will be in line for a lot of work this week with Sincere McCormick (ankle) out for the remainder of the season.