The Toronto Raptors moved to the brink of their first N.B.A. championship Friday night by outlasting the favored Warriors, 105-92, in a game 4 slog. Toronto seized a three games-to-one series lead to take the series back to Canada for Monday night’s game 5.

The warriors and their fans, who have reveled in three N.B.A. titles in the past four seasons, understood what was at stake on this night perhaps better than anyone else. A three games-to-one lead in the best-of-seven finals has led to 33 titles in 34 prior finals series.

The warriors will now need their own Cleveland-style comeback to ensure that their dynasty of the past half-decade — as the first N.B.A. team to make five successive trips to the finals since the Boston Celtics in the 1960s — does not end in defeat. They could also clearly use Kevin Durant, who was expected to have returned by now from a strained right calf.

Golden state welcomed Klay Thompson and Kevon Looney back from injury in this game 4, before a noisy and nervy sellout crowd of 19,596 at Oracle, but the hosts could not muster a response to Toronto’s 37-21 edge in the third quarter.

Kawhi Leonard scored 17 of his 36 points in the period, and serge Ibaka finished with a crucial 20 points off the bench. The raptors stretched the lead to as many as 16 points in the final period and have won 13 of the 16 quarters in the series.

Thompson led the Warriors with 28 points, and his backcourt mate, Stephen curry, added 27. But Curry missed 7 of his 9 attempts from 3-point range, and no other Warrior scored more than 10 points in a game that, based on finals history, golden state had to take.