The Arizona Diamondbacks traded away their franchise cornerstone on Wednesday when they traded superstar first baseman Paul Goldschmidt to the St. Louis Cardinals for pitcher Luke Weaver, catcher Carson Kelly, infielder Andrew Young, and a Competitive Balance Round B 2019 draft pick.

Goldschmidt had a solid 2018 season in which he hit .290/.389/.533 with 33 home runs and 83 RBI in 690 plate appearances while playing solid defense at first base. Goldschmidt has just one-year left on his current contract making him a rental for the Cardinals who have a win-now mentality about 2019. Goldschmidt will take the place of Matt Carpenter at first and Carpenter will move to third base where he will displace Jed Gyorko.

Through parts of three seasons in the big leagues, Luke Weaver has a 4.79 ERA with 238 strikeouts and 83 walks in 233 innings. Carson Kelly has played behind Yadier Molina his entire career and in 63 games over the course of three seasons, Kelly hit a dreadful .154/.227/.188 batting line. Andrew Young spent 2018 playing between High-A Palm Beach and Double-A Springfield and has been solid, hitting .289/.379/.479 with 21 home runs and 58 runs batted in across 503 plate appearances.

The Diamondbacks are beginning to rebuild after losing Patrick Corbin and A.J. Pollock to free agency. Zack Greinke, David Peralta, Steven Souza, and Robbie Ray could all be traded this offseason now that Goldschmidt shipped away.

The Cardinals won 88 games in 2018 and are hoping that Goldschmidt will get them over the hump in 2019 and give them a shot at a title. As for the Diamondbacks, it’s back to the basement.