Plenty of players have changing values at the trade deadline, however, the five below are the biggest fantasy baseball value risers of the past week.
Castellanos led the Detroit Tigers in multiple categories but was limited due to the players around him. His batting average is lower than what he put up last year but he is on par with his career numbers. A trade is exactly what Castellanos needed and fantasy managers can rejoice now that he is surrounded with better bats. Expect more run and RBI chances.
Another former Detroit Tiger, Greene, is granted a better opportunity as well. The Braves have 64 wins compared to the Tigers 32. While the Braves do have other options Greene has earned the closer role due to an excellent 2019 and already has 22 saves.

Image Courtesy of Associated Press
Reyes is a power hitter and will benefit from his move to Cleveland after his trade from the Padres. Firstly Cleveland is known to be a better ballpark for batters compared to San Diego. Secondly, the position of designated hitter could keep Reyes energized allowing him to work on improving his batting average. He is a solid waiver wire add.
VanMeter wasn’t traded during the deadline, however, his position on the Reds is secure after Yasiel Puig was traded to the Indians. The 24-year-old outfielder is batting a .312 average, .418 OBP, .532 slugging. Most of his damage will come against right-handed pitching as he only has 12 plate appearances against lefties.

Image courtesy of San Diego Union-Tribune
May is the Dodgers number one prospect and will be called up to start Friday versus the Padres. All signs point to May staying in the MLB at least till the playoffs start. He should be added as he has the stuff to be a dominant pitcher.
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