Nevertheless, McLean instantly proved he belonged with 5 2/3 innings of shutout ball and eight strikeouts against a solid Mariners lineup. He made their hitters look foolish over and over again mostly with his sweeper and curveball.

Basallo, 21, is a former international signee out of the Dominican Republic and is a consensus top-15 prospect in the majors at this point. CBS Sports prospect expert R.J. Anderson ranked Basallo ninth overall in his midseason rankings this year, saying the following:

Ahead of Sunday's game against the Houston Astros, Baltimore called up highly regarded prospect Samuel Basallo. In doing so, it posted a hype video and an emotional video with his father sharing the news: Basallo is the Orioles' No. 1 prospect and the No. 8 overall prospect in the league, per MLB.com's prospect rankings.

Trevor Rogers took a shutout into the seventh inning, and Gunnar Henderson had a solo homer and an RBI triple on Monday night to lead the Baltimore Orioles to a 6-3 victory over the Boston Red Sox. Top Orioles prospect Samuel Basallo,

So, before we get to the top waiver-wire targets for every position ahead of Week 22, let's take a look at four big-name prospects to know who were promoted in recent days:  For more names to know who might get the call in the coming weeks,

These are rest-of-season rankings for mixed 5x5 fantasy baseball leagues. You can check out our rankings for dynasty leagues here.

Jesus Sanchez robbed Gunnar Henderson of a grand slam and denied Samuel Basallo his first MLB homer in Astros’ 12-0 loss to Orioles.

As soon as the ball left the bat and rocketed toward deep right field, Samuel Basallo thought he had done it. The 21-year-old phenom appeared to have blasted a three-run home run in the seventh inning on Sunday during his MLB debut for the Orioles.