Top MLB Prospect Call-Up Radar Report, Week 21

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Top MLB Prospect Call-Up Radar Report, Week 21
Elise Amendola/Associated Press
Mookie Betts is back for his third stint with the Boston Red Sox in 2014. He's likely to stick around this time.

The 2014 season has seen a number of notable prospects receive call-ups to the major leagues. Even with the final month approaching, there will be more to come—and soon.

September brings with it expansion to 40-man rosters. Only a little more than a week away, that should allow for plenty of promotions of prime prospects.

Highly regarded youngsters like Marcus Stroman, Jonathan Singleton, Gregory Polanco, Ken Giles and Javier Baez have been seeing regular time for their respective clubs for quite some time now. Others, like Oscar Taveras and Taijuan Walker, have been shuttling up and down between the minors and majors for much of the year.

Earlier this week, the Boston Red Sox recalled outfielder Mookie Betts for yet another stint. He should stick for longer this time, considering they demoted incumbent center fielder Jackie Bradley Jr. to Triple-A Pawtucket to free up playing time for Betts.

Meanwhile, other non-contenders brought up prospects for their debuts, including left-hander Andrew Chafin of the Arizona Diamondbacks and outfielder Matt Szczur of the Chicago Cubs.

More young impact talent will join the mix too. Who will be the next to reach the major leagues? In order to predict estimated times of arrival this season, we've classified the prospects on this list using the following color-coded scale:

  • Red: September call-up, at best.
  • Green: Call-up within a week/call-up is imminent.

Here's a look at the top prospect call-up report for Week 21 of the 2014 MLB season.

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