The Surrey Eagles suffered their first loss of the B.C. Hockey League post-season Monday night, falling 4-3 to the rival 91Ô­´´ Chiefs in the first game of their second-round playoff series.

Making matters worse, Surrey – who swept their first round series in four straight games over the Burnaby Express – was felled by a former Eagles, as 91Ô­´´ forward Darnell Dyck scored the winning tally 12:15 into the third period.

Eagles leading scorer Brad McGowan – who led the league in playoff scoring after the first round – got the home team on the board first Monday, when he beat Chiefs’ netminder Wyatt Galley on the power play, but 91Ô­´´ tied the game before the first intermission, when Tim Daly snuck one past Eagles goalie Karel St. Laurent, who stopped 29 shots in a losing effort.

Both teams scored twice in the second frame – Josh Myers and Matt Ius for 91Ô­´´, Air Force-bound Scott Holm and Robert Lindores for the Eagles – to leave both teams knotted at 3-3 heading into the final 20 minutes.

Neither team waited long to answer for a goal scored against them in the second period, either. After Myers’ power-play tally at 6:36, Holm scored just 20 seconds later. And after Lindores – who has five points in five games so far this post-season – gave the Eagles a brief 3-2 lead midway through the period, Ius responded just 1:42 later to tie it.

Ius finished the game with a goal and two helpers, giving him 12 post-season points, and a one-point cushion on McGowan, who had 11 after Monday night’s affair.

The Eagles have the opportunity to draw even in the best-of-seven series Tuesday – also at South Surrey Arena.

Games 3 and 4 move to the 91Ô­´´ Events Centre on Thursday and Friday nights.

Puck drops in both games at 7 p.m.