We already talked about Orlando Calixte who the Giants added to the 40 man MLB roster days after signing him to a minor league contract. They also signed 3 other notable minor league deals in the past week:
Wynton Bernard, OF, 26 yo, B-R, T-R. 6'2", 195 lbs. .279/.344/.396, 13 2B, 5 3B, 7 HR, 23 SB in 376 AB(AA/AAA). Bernard was drafted by the Padres in 2012 but played last year in the Detroit Tigers organization. He is fast and plays mostly CF.
Juniel Querecuto, IF, 24 yo, B-S, T-R. 5'9", 155 lbs. .241/.298/.341, 19 2B, 3 3B, 3 HR, 340 AB(AAA). Querecuto comes out of the Rays organization. He went 1 for 11 with a triple with the MLB club last year. He played mostly SS.
Michael Roth, LHP, 27 yo. 6'1", 210 lbs. 11-5, 2.97, 145.1 IP, 42 BB, 94 K, GO/AO= 1.31(AAA). Roth is a well known name in prospect watching circles. Classic polished college lefty drafted out of South Carolina in 2012. Has always pitched well in the minors but has gotten bombed in several MLB trials. He probably just does not have the stuff to get MLB hitters out.