CHICAGO -- The Seattle Mariners have not been to Wrigley Field in nearly a decade, but manager Scott Servais knows enough about the idiosyncrasies of the park and daytime baseball to give his team enough direction.

After an ugly 12-1 loss Friday, the Mariners hope Servais' knowledge translates into a win Saturday afternoon.

Servais played for the Cubs from 1995-98 mostly sub-par years for Chicago except for a 1998 postseason appearance.

"I played here for three and a half years," Servais said. "It was really the first time in my career I had the chance to play every day, probably because they didn't have anybody else when they traded for me.

His best season with Chicago was in 1996 when he hit .265 with 11 home runs and 63 RBI over 129 games.

This weekend is only Seattle's second all-time and the Mariners have lost three of four meetings in Chicago. The Cubs took two of three from the Mariners in their last visit to Chicago from June 12-14, 2007.

Servais will be giving a crash course in both Wrigley Field culture and big league baseball to the newest Mariner - 25-year-old Cuban prospect Guillermo Heredia who was called upon Friday from Triple-A Tacoma.

"We want to get him comfortable," Servais said. "He's a guy who can come in and defend late in the game, pinch hit, pinch run, do those type of things. We will get him some starts eventually."

Heredia did make his major league debut following Friday's 74-minute rain delay, settling in in right field in the bottom of the seventh. He also was 0-for-1 in his lone plate appearance.

Heredia was pleased to get his first big league opportunity after spending 84 games between Double-A Jackson and Triple-A Tacoma.

"The biggest adjustment is the pitching," he said through a translator. "Obviously it's different than Cuba. Here they focus more on fastball, (and the) changeup. That's the biggest thing."

Heredia signed with the Mariners as a non-drafted free agent on March 1 after hitting .285 with 231 runs, 57 doubles, 15 triples, 23 home runs and 121 RBI in 374 career games in Cuba's Serie Nacional.

The Mariners will be hoping their bats can perform better than Friday and Wade Miley lasts longer than Hisashi Iwakauma. Iwakuma only lasted three innings and the Mariners will look for some distance from Miley, who has dropped six straight starts.

Miley has a 5.13 ERA since his last win on June 7 against Cleveland but the Mariners have only scored six runs for him. Miley last pitched Sunday in Toronto when he allowed two runs and four hits in six innings of a 2-0 loss.

Miley will be facing Cubs ace Jake Arrieta, who is 3-4 since his no-hitter on May 16. Arrieta, the 2015 NL Cy Young Award winner, has struggled since he completed a run of 20 consecutive victories including a no-hitter on May 16.

He has gone 3-4 since and the Cubs are 0-4 in his last four starts while Arrieta has a 5.55 ERA in those games.

Seattle batters don't see Arrieta on anything approaching a regular basis although the Cubs right-hander has had two previous outings against Seattle.

He is 0-1 with a 4.63 ERA in three career starts against the Mariners but hasn't faced them since 2012 while with the Baltimore Orioles.

In his last outing, Arrieta allowed four runs on five hits over six innings against the White Sox. Three of those runs occurred when he allowed a home run to Todd Frazier.

"Jake was really good except for the one pitch," Cubs manager Joe Maddon said. "(The) three-run homer definitely did hurt us right there.

The Cubs have won three straight and will be hoping to give Arrieta similar support as Jon Lester had Friday. Lester had a five-run lead through three innings as David Ross and Jason Heyward homered.

"Up and down the lineup it was a well-played game," Maddon said. "We pitched well, we played well, we did everything well. After a really hard-fought series with the White Sox it was really nice to play a game like that."