The special teams came to play for the Saskatchewan Roughriders on Saturday night, but that was about it for the Green and White.

Saskatchewan had its four-game winning streak snapped with a 30-25 loss to the Ottawa Redblacks at a sold-out Mosaic Stadium.

"We've got to learn to win those types of games, especially here at home, that's one of the more disappointing things," said Riders head coach Chris Jones. "We were here at our place and allowed a team to walk out with a five-point (win) when we're trying to fight for home field advantage."

The game started with a bang for the Riders as Marcus Thigpen took the opening kickoff 97 yards to the end zone for a touchdown. Kyran Moore would return a punt 90 yards for a touchdown to open the second half as well as special teams accounted for 17 of the Riders' 25 points.

While the Riders' special teams had a big night, the same couldn't be said for the offence and defence. Saskatchewan's offence was held to 240 yards, while Ottawa torched the Riders' defence for 481 yards.

"Special teams-wise, I thought we played pretty good; I thought our offence and defence portions of our football team did not play very well at all, we can't be satisfied with 240 yards of offence, but defensively, if you can't stop them in the fourth quarter, when its a two-point game at home with the wind, that's a problem," said Jones.

Saskatchewan's offence did finally find the end zone in the fourth quarter when quarterback Zach Collaros found receiver Naaman Roosevelt wide open over the middle for a 34-yard score. That touchdown snapped an over 100-minute drought for the Riders.

Collaros finished 10-of-27 for 162 yards with a touchdown and two interceptions.

After the game, Collaros hung the loss on his shoulders as the offence missed a number of opportunities for big plays with missed passes or drops.

"We just didn't execute the game plan tonight, there were plays there to be made tonight and we just didn’t execute," he said.

"There were plays there to be made, we all missed our fair share, but the buck stops with me."

Execution was the keyword among the Riders after the game. The coaches and players felt they didn't do what they needed to in order to win the game.

"We've got to go out and we've got to execute better, we've got to catch the ball better -- we had more drops in the last three weeks just tonight -- and so it's a culmination of negative things that happened that ended up in a five-point loss," said Jones.

Riders safety Mike Edem added, "We're not good enough to just walk on win games, we've got to actually go out there and put in the work, do our due diligence and make sure we come out with a (win)."

Tre Mason posted 68 yards on 14 carries in the loss for Saskatchewan, while his counterpart for Ottawa, William Powell, rolled to 148 yards and two touchdowns on 18 carries.

Powell opened the scoring for Ottawa in the first quarter with a 19-yard score and then he iced the game in the fourth with a 69-yard touchdown, which gave the Redblacks a 30-18 advantage.

The CFL's rushing leader has made a habit of posting big numbers against the Riders over the past two seasons.

"He's a tremendous back," said Jones. "How many times did it look like we had him down and he's able to squirt through and just continues to move his feet, he's got tremendous vision and then once he hits, you saw, if you outrun our defence, you're fast, so he's a great back and he's a thorn in our side."

Ottawa quarterback Trevor Harris had a big night as well, going 27-of-34 for 334 yards and two touchdowns in the win.

Saskatchewan drops to 7-5 with the loss, which puts them even with Edmonton for second place in the West Division. Ottawa improves to 7-5 and takes over first place in the East Division.

The Riders head to Toronto on Saturday to face the Argonauts in Week 15 action.