The announcement was made by Executive Vice President/General Manager Theo Epstein.
Aardsma, 26, has been added to Boston's major league roster, putting that list at 39 players.
Mota is a 22 year old pitcher (and converted OF), who struck out 22 in 27 2/3 IP at Lowell last season. Socolovich has struck out 90 in 115 professional innings, to go along with 55 walks. I guess the good news is that neither of these guys would come close to cracking a top 20 prospect list, but it still seems strange (at best) to be giving anything up for a guy who is unable to command the strike zone.
Well, I guess Aardsma was at one point highly-regarded, given that first-round pick status. Maybe the Sox saw a mechanical flaw they believe they can fix. We don't have a whole lot of reason, based upon last season's results, to doubt the abilities of John Farrell as a pitching coach.