On Thursday, the Oakland Athletics announced the signing of slugger Khris Davis to an extension, through the 2021 season, worth a reported $33.5 million.

Davis was initially traded to the A's from the Milwaukee Brewers in February of 2016, just ahead of Spring Training, for two minor league prospects: right-handed pitcher Bubba Derby and catcher Jacob Nottingham. Davis had spent three seasons with the Milwaukee, the team that drafted him in the seventh round of the 2009 MLB draft, and was already rounding into a consistent big league power threat.

Davis with Milwaukee (3 seasons)

2013: .279 AVG/.353 OBP/.949 OPS, 11 HR, 27 RBI (56 games/136 at-bats)

2014: .244 AVG/.299 OBP/.756 OPS, 22 HR, 69 RBI (144 games/501 at-bats)

2015: .247 AVG/.323 OBP/.828 OPS, 27 HR, 66 RBI (122 games/392 at-bats)

Since coming over from those Brewers, Davis has been the model of consistency, as a middle-of-the-lineup threat, displaying elite power and run-production capabilities. He can basically be penciled-in for 40-plus homeruns and 100-plus runs batted-in each season.

Davis with Oakland (3+ seasons)

2016: .247 AVG/.307 OBP/.831 OPS, 42 HR, 102 RBI (150 games/555 at-bats)

2017: .247 AVG/.336 OBP/.864 OPS, 43 HR, 110 RBI (153 games/566 at-bats)

2018: .247 AVG/.326 OBP/.874 OPS, 48 HR, 123 RBI (151 games/576 at-bats)

An added layer of value has been Davis' durability, as he has played in over 150 games each of the past three seasons for Oakland. Already off to a fast start in 2019, Davis has already smashed 10 homeruns (t-2nd in MLB) and driven-in 20 RBI (4th in MLB) through 21 games. Provided he continues his trend of health and production, the 31-year-old should end up among the league leaders in both homers and RBIs for a fourth consecutive year, giving Oakland a legitimate shot to make the playoffs in back-to-back seasons.

As for the two players the A's sent over to Milwaukee in return for Khris Davis? Both players are currently playing for the Brewers' AAA minor league affiliate, the San Antonio Missions. Jacob Nottingham made his major league debut last season, with a nine-game/20 at-bat "cup of coffee" in Milwaukee, during which he posted an underwhelming .200 AVG. Bubba Derby, the other player involved in the trade, has yet to make an appearance with the big league club.