It's been an active offseason, in terms of trades. And while much of the attention might be on the big leaguers moving to help postseason hopefuls improve, many clubs are using this time to build for the future and bolster their farm systems.
To help keep track of all the prospects who have been traded since the offseason began, here is a running tally of all Top 30 prospects who have changed hands, and where they land on their new clubs' Top 30 lists.
Dec. 13
2B/SS Drew Jackson -- No. 24 on Orioles' Top 30
Phillies trade Jackson for International Signing Bonus Slot Money
RHP Jordan Romano - No. 23 on Rangers' Top 30
White Sox trade Romano for cash considerations
Dec. 12
RHP Tanner Rainey -- No. 22 on Nationals' Top 30
Reds trade Rainey for RHP Tanner Roark
Dec. 5
2B Andy Young -- No. 22 on D-backs' Top 30
Cardinals trade C Carson Kelly, RHP Luke Weaver, Young and a 2019 Competitive Balance Round B pick for 1B Paul Goldschmidt
Dec. 3
OF Jarred Kelenic -- No. 2 on Mariners' Top 30 (No. 62 overall)
RHP Justin Dunn -- No. 3 on Mariners' Top 30 (No. 89 overall)
RHP Gerson Bautista -- No. 28 on Mariners' Top 30
Mets trade Kelenic, Dunn, Bautista, OF Jay Bruce and RHP Anthony Swarzak for 2B Robinson Cano, RHP Edwin Diaz and cash
Nov. 30
OF Daniel Johnson -- No. 12 on Indians' Top 30
Nationals trade Johnson, RHP Jefry Rodriguez and a player to be named later for C Yan Gomes
Nov. 29
LHP Ricardo Sanchez -- No. 23 on Mariners' Top 30
Braves trade Sanchez for cash considerations
Nov. 19
RHP Chih-Wei Hu -- No. 17 on Indians' Top 30
Rays trade Hu for 2B/SS Gionti Turner
LHP Justus Sheffield -- No. 1 on Mariners' Top 30 (No. 31 overall on Top 100)
RHP Erik Swanson -- No. 11 on Mariners' Top 30
OF Dom Thompson-Williams -- No. 16 on Mariners' Top 30
Yankees trade Sheffield, Swanson and Thompson-Williams for LHP James Paxton
Nov. 17
RHP Trent Thornton -- No. 22 on Blue Jays' Top 30
Astros trade Thornton for SS Aledmys Diaz
Nov. 8
OF Jake Fraley -- No. 27 on Mariners' Top 30
Rays trade OF Mallex Smith and Fraley for LHP Michael Plassmeyer, OF Guillermo Heredia and C Mike Zunino