Crummer signed with Reign prior to the 2017 NWSL season from Melbourne City.

During the 2016/2017 W-League season Crummer was injured, which forced her off the pitch with Reign FC until the mid-point of the NWSL season.

She made four appearances, netting one goal in 49 minutes.

Crummer played eight games for Melbourne City this season and scored three goals. 

“We are appreciative of Larissa’s efforts for the club last season, and in particular, thank her for all the hard work to come back from injury,” said Reign FC owner Bill Predmore.

“In our final game of last season, Larissa came off the bench to grab the goal that evened the score, and then delivered the cross that led to the match winner.

"We saw a glimpse of her quality that evening, and we are sure she will find great success in the future,” he said.

Crummer is currently in the Matildas camp in the 25-player extended squad ahead of the Algarve Cup.