Golden State Warriors could be without guard Klay Thompson for Game 3 of the NBA Finals series due to a hamstring injury.

Thompson sustained the problem during Golden State’s 109-104 win over Toronto Raptors on Sunday as the two-time defending champions levelled the best-of-seven series.

An MRI scan since has revealed a minor strain and he is now rated as a doubt for Game 3 as GSW prepare for the first of two home games.

Golden State are 1.40 to win Game 3 and Toronto can be backed at 3.00.

Back-up center Kevon Looney also picked up an injury in the win in Toronto and now seems set to miss the rest of the NBA Finals as he has a non-displaced collarbone fracture, and no timescale has been put on his recovery as yet.

Thompson said he expected to play in the first game at the Oracle Arena after the Game 2 win, but coach Steve Kerr was less convinced.

“Klay said he’ll be fine, but Klay could be half-dead and he would say he would be fine,” said Kerr.

Golden State may be able to call on Kevin Durant for the first time since the Conference Semifinals when the Raptors visit on Wednesday.

Durant, the Finals MVP in each of the last two years, has a calf problem but did travel to Toronto in the hope he could play in the second game and is close to making a return.