Anthony Edwards credited Karl-Anthony Towns after he halted his slump to keep the Minnesota Timberwolves alive in their Western Conference finals series against the Dallas Mavericks.

Towns scored 20 of his 25 points in the second half as Minnesota held off a late Dallas rally for a 105-100 road win, forcing a Game 5 in Minneapolis on Thursday.

That came after a difficult start to the series for the four-time All-Star, with coach Chris Finch saying it was "hard to watch" his struggles in Game 3.

Towns shot just 27.8 per cent in the series' first three games, but was 9 of 13 from the floor and made 4 of 5 from 3-point range on Tuesday.

Edwards, who narrowly missed out on a triple-double with 29 points, 10 rebounds and nine assists, said Towns was the primary reason the Timberwolves retained hope of an NBA Finals berth. 

"Everything came together for him; he was super confident," Edwards said of Towns. 

"He played exceptionally well, and he came through big-time. He was the reason we won tonight."

Finch echoed Edwards' praise, saying: "KAT's a great player. His struggles were not going to last forever. He got himself going. 

"Even when he got deep in foul trouble, we left him out there, just let him roll, and he played smart, played under control, rebounded really well for us, executed defensively. We're really proud of him. Tonight was a great step for him."

While it was Towns' efforts that gave Minnesota a lead to defend, it was Edwards who made certain of the victory with a mid-range jumper after the Mavs pulled within three points just over a minute before the buzzer. 

Towns, who fouled out with one minute and 38 seconds on the clock, said of his team-mate's game-sealing shot: "I was on the bench and had a front-row seat. I feel like he was visualising that make and he got to exactly the spot he wanted to.

"I'm honoured to be playing with my brother here, seeing him every day put the work in, and I knew when he got to that shot it was a high likelihood he was going to make that."