TORONTO -- The Mariners looked into the future on Friday -- at least what they hope their future might look like -- as a youthful Blue Jays club loaded with rising young stars powered its way to a 7-3 victory over Seattle on the opening night of a three-game series at Rogers Centre.

Toronto’s win-loss record is similar to Seattle’s this season, at 52-73, but the Blue Jays have begun unveiling an impressive prospect core and are playing an exciting brand of ball while going 13-7 over the past three weeks.

• Box score

The Mariners believe their own future holds similar hopes and bright prospects, but for now they’re letting most of that group mature in the Minors. Rookie Tim Lopes provided Seattle’s biggest offensive spark with a two-run single, but the Mariners didn’t do any further damage against 25-year-old right-hander Jacob Waguespack in his 5 1/3 innings of work.

“I’m looking forward to this series,” Mariners manager Scott Servais said. “They’ve got young players we haven’t seen much. I’ve heard a lot about them, but getting a chance to see them, they’re certainly playing with energy and they have power. There’s no question about that. They’re really swinging the bat well right now.

“We’re not quite at that spot yet. We have quite a few young guys coming and they’ll eventually get here. It’ll be interesting how it plays out against the Blue Jays over the next few years.”

Toronto rookies Vladimir Guerrero Jr. and Danny Jansen hit two of the four homers surrendered by 34-year-old southpaw Wade LeBlanc, including an impressive piece of hitting by the 20-year-old Guerrero, who drove a changeup off his shoetops over the left-field fence for his 14th homer in 92 games.

Derek Fisher, a 25-year-old outfielder acquired from the Astros at the July 31 Trade Deadline, launched a two-run shot, Randal Grichuk went back to back with Guerrero and rookie Cavan Biggio added two of the Blue Jays’ 11 hits.

Considering recently promoted rookie sensation Bo Bichette didn’t reach base for the first time in his 18 Major League games and fellow rising star Lourdes Gurriel Jr. is on the 10-day injured list with a strained left quad, it’s an impressive collection of youth being rolled out in Toronto.

Seattle has lost 9 of 12 since July 31, falling to 50-73 on the season. After another scoreless inning by opener Matt Wisler, LeBlanc gave up 11 hits and seven earned runs in seven innings and is now 6-7 with a 5.40 ERA.

“He really struggled command-wise in the first couple innings and wasn’t getting the ball where he wanted to at all,” Servais said. “The changeup to Guerrero cut right back over the middle of the plate. Give him credit. He righted the ship and was able to get deep in the ballgame and finish it off for us. After the third inning, I wasn’t expecting to get that much length out of him.

“He hung in there and made some adjustments, but the home runs -- the ball does fly here and we know that -- but you can’t give up four of them and think you’re going to come out on the right end of this thing.”

Guerrero’s homer came on a changeup that unexpectedly cut back -- something LeBlanc has said never happened to him in previous years -- and left the veteran shaking his head for several reasons.

Catcher Omar Narvaez had set up on the outside corner for the pitch, but the ball ended up cutting to the inside corner and Guerrero was able to turn on it.

“That was a changeup that cut three feet. I’ve been throwing a changeup all my life [and not seeing that action],” LeBlanc said. “But [Guerrero] is a good hitter. His dad did it for years.”

LeBlanc continues to search for answers in a season where he’s now surrendered 25 homers in 105 innings after allowing 24 in 162 frames last year, when he finished 9-5 with a 3.72 ERA.

“I haven’t had a feel for anything this year,” he said. “Whether it’s the baseballs or not, at some point you have to figure out how to make pitches to get some guys out and get some balls off the barrels or else you’re going to be going home.”