Jarryd Hayne's chances at making a return to the San Francisco 49ers have improved drastically as the struggling team's disastrous record continues.

The 49ers have suffered yet another fumbling defeat, this time, losing 29-13 to the Seattle Seahawks on Sunday.

The two players who replaced the former rugby league star, returner Bruce Ellington and running back Shaun Draughn put in a disappointing performance, sending the 49ers to a three win and seven loss record.

San Francisco coach Jim Tomsula was fuming. "I was definitely disappointed in the performance."