Colorado Rockies vs. Seattle Mariners Pick – MLB August 8, 2020

    Ryan Castellani (0-0, 0.00 ERA) vs. Nick Margevicius (0-0, 5.40 ERA)

The Colorado Rockies apparently felt disrespected as underdogs in Seattle last night. They came up with a big 8-4 win behind the steady arm of Antonio Senzatela and a quick strike offense at the plate. Senzatela has been proving his doubters wrong in 2020, as he recorded his third win of the season for a perfect mark of 3-0.

He went 6 strong innings, with 5 hits and 2 earned runs conceded. That’s a great sign for the Rockies after Senzatela had zero control on the bump a season ago. He might be able to play an x-factor role for the Rockies this season. We were able to ride the Rockies to a +116 winner last night in Seattle.

The Rockies and Mariners will get after it again on Saturday night at T-Mobile Park. Don’t look now, but the Rockies are 10-3 and have the lead in the NL West. Is it going to last? I find it unlikely that the Rockies can keep this up rough to overcome the Los Angeles Dodgers. That said, it’s 2020 and we should expect the unlikely to happen.

I don’t think that means the Mariners are going to the World Series or even the postseason. They head into Saturday with a record of 5-10 for dead last in the AL West. No shocker there, as the Mariners were expected to be a bad team again. They should go into a deeper full blown rebuild mode at the trade deadline and see what the market bears for Kyle Seager. He would be a terrific asset for a contender looking for a third baseman.

We’ll see what the Mariners’ hitters can do against a rookie on Saturday night. The Rockies will be sending a replacement for Chi Chi Gonzalez to the bump while he deals with bicep tendonitis. 24-year-old Ryan Castellani gets the call in this one for the Rockies. It’s his first ever major league appearance after pitching well in spring and summer training. He had elbow surgery last year, which set him back a bit, but appears ready to go. Head below for our free Colorado Rockies vs. Seattle Mariners pick for August 8, 2020.

Colorado Rockies vs. Seattle Mariners MLB Baseball Betting Odds:


  • Rockies +1.5 (-175)
  • Mariners -1.5 (+155)

  • Rockies (+103)
  • Mariners (-113)
Total Points:

  • Over 9 (-120)
  • Under 9 (+100)


Colorado Rockies vs. Seattle Mariners Prediction:

Ryan Castellani has a big opportunity to impress and stay in the major leagues. Chi Chi Gonzalez is the weakest link in the Rockies’ rotation, so if Castellani impresses, he could very well steal a starting job. Castellani did not look ready to pitch in the majors last season. Not even close. He was rocked for an ERA of 8.31 and 1.94 WHIP in Triple-A ball.

A season before in Double-A, Castellani was tagged for a 5.49 ERA and 1.53 WHIP. However, Castellani was adequate in spring and summer training. He notched an ERA of 4.26 and 1.89 WHIP. Adequate, yes, but he will have to improve his command if he wants to stay in the Rockies’ rotation. I’m not expecting a superstar debut for Castellani in Seattle.

Nick Margevicius is getting his first start of the season after some work out of the bullpen in 2020. He owns an ERA of 5.40 and 1.00 WHIP in 5 innings as a reliever. Margevicius has surrendered 4 hits and 3 earned runs in his limited workload this season. He was a 12-time starter with the Padres as a rookie in 2019. The Padres did not feel confident about him and placed him on waivers. The Mariners pulled the trigger on giving Margevicius another opportunity.

With the Padres, Margevicius was shaky with a 6.79 ERA and 1.61 WHIP. Batters connected against Margevicius for a .307 batting average. That’s not good enough for this level of competition. He is not in the rotation because of his brilliant work out of the bullpen. With Kendall Graveman injured, Margevicius is getting a spot start here. The 24-year-old still has room to develop, but doesn’t appear ready to be a major league starter right now. I think the total is a shade too low here with Castellani and Margevicius starting.


The Bet
Kyle E / Author

Kyle is a veteran of TheSportsGeek and has spent nearly a decade providing accurate sports picks and writeups here. He has been a sports handicapper for 10+ years and started sharing his picks and thoughts in 2011 at TheSportsGeek. His expertise spans across multiple sports, including the NFL, NCAAF, MLB, NHL, and horse racing. Prior to writing for TheSportsGeek, Kyle was a fantasy football expert, who ultimately parlayed it into a successful sports betting career. You can find his picks daily only at TheSportsGeek.

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