The Reds made small improvements at the margins without giving up any key prospects who were set to help them soon.

With the MLB trade deadline looming, the Arizona Diamondbacks have traded first baseman Josh Naylor to the Seattle Mariners in exchange for two pitching prospects. The Mariners sent their 13th-ranked prospect Brandyn Garcia and their 16th-ranked prospect Ashton Izzi in return, both pitchers.

The Cincinnati Reds add Zack Littell (8-8, 3.58) to the rotation and move swingman Nick Martinez to the bullpen to make room.

Hours after acquiring Ke'Bryan Hayes, the Reds landed right-hander Zack Littell from the Rays as part of a three-team trade Wednesday night.

The Reds are making a second big trade of the day, acquiring starter Zack Littell from Tampa Bay. Find out more at MLB Trade Rumors.

The Reds acquired Ke'Bryan Hayes from the Pirates in exchange for reliever Taylor Rogers and prospect Sammy Stafura.

This article was originally published on www.si.com/onsi/minor-league-baseball as Pittsburgh Pirates Receiving Highly Touted Infield Prospect in Trade with Cincinnati Reds.