4:19pm: Minor league right-hander Jeter Martinez is going to the Pirates in the trade, reports Adam Jude of the Seattle Times.
4:13pm: The Mariners are acquiring left-handed reliever Caleb Ferguson from the Pirates, reports Ken Rosenthal of The Athletic. He’s playing on a one-year, $3MM contract and is a free agent at season’s end.
Ferguson, 29, is in the midst of a strong season with Pittsburgh. He’s pitched 43 1/3 innings and logged a 3.74 ERA with a 19.3% strikeout rate and 8% walk rate. He’s allowed only one homer on the season and kept just under 50% of his opponents’ batted balls on the ground.
While Ferguson isn’t a flamethrower who misses bats in bunches — he’s averaging 94.1 mph on his four-seamer this season — he avoids hard contact better than any other reliever in the game. Ferguson’s 83.5 mph average exit velocity is the lowest of any pitcher in Major League Baseball (min. 40 innings). His 25.2% hard-hit rate is second, trailing only Padres standout lefty Adrian Morejon.
Ferguson has pitched in parts of seven major league seasons. He’s totaled a 3.69 earned run average in 305 big league innings. The southpaw typically misses more bats than he has in 2025 (career 26.4% strikeout rate), but he’s currently sporting his lowest walk rate since the shortened 2020 season and has never limited hard contact as well as he’s managed to this year. Ferguson has been an absolute monster against left-handed opponents, limiting them to a pitiful .167/.257/.182 slash in 74 plate appearances. He’s also been strong against right-handers, however, holding them to a .250/.327/.354 slash. It’s not quite dominant, but this is his best production versus righties since 2022.
More to come.