The Seattle Mariners are currently leading the American League West with a 30-25 record and will likely look to upgrade

The Pirates have slow-played Chandler's arrival, giving major-league starting assignments instead to some of their other homegrown pitchers (mostly Carmen Mlodzinski, but also Tom Harrington and Mike Burrows). I have to imagine that's going to change over the next few weeks.

Roman Anthony is the top prospect in baseball, but he's not the only Red Sox prospect to crack Keith Law's new Top 10.

In most cases, MLB prospects all get lumped into the same conversation, despite the fact that a 23-year-old playing at the Triple-A level is significantly closer to reaching the big leagues than a 17-year-old just starting his pro career in rookie ball.

The Mariners are calling up Cole Young, their No. 2-ranked prospect from Tacoma, who is expected to make his MLB debut on Saturday at T-Mobile Park.

Though he only made his Major League debut earlier in the week, Texas Rangers outfielder Alejandro Osuna is already showing he belongs. The seventh-ranked pros

Three top fantasy baseball prospects - Bubba Chandler, Roman Anthony, Coby Mayo - that can make big impacts. These MLB prospects are waiver wire pickups or stashes.