Pittsburgh Pirates: Comparing the Rookie Seasons of Bryan Reynolds and Jason Bay

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SAN FRANCISCO – AUGUST 11: Jason Bay of the Pittsburgh Pirates bats during the game against the San Francisco Giants at AT&T Park in San Francisco, California on August 11, 2007. The Pirates defeated the Giants 13-3. (Photo by Brad Mangin/MLB Photos via Getty Images)
SAN FRANCISCO – AUGUST 11: Jason Bay of the Pittsburgh Pirates bats during the game against the San Francisco Giants at AT&T Park in San Francisco, California on August 11, 2007. The Pirates defeated the Giants 13-3. (Photo by Brad Mangin/MLB Photos via Getty Images) /

The Pittsburgh Pirates have had a handful of great rookie seasons in recent years. Two of the best belong to a pair of left fielders, which of these two seasons was the better one?

The Pittsburgh Pirates have had a handful of notable rookie seasons in their history. This included last season when the Pirates had two of the best rookies in the National League in outfielder Bryan Reynolds and shortstop Kevin Newman.

Out of the strong rookie campaigns that Pirate players have enjoyed in recent seasons, two stand out above the rest. These two seasons were Reynolds aforementioned rookie campaign from 2019, and Jason Bay’s 2004 National League Rookie of the Year season. But, between the two, which left fielder had the better rookie season?

Each player brought different skills to the table. There is also an argument to be made for each player as to which had the better rookie season. Can that debate be settled?

Today, let’s look back at each of their seasons. Analyze what they did good, areas in which they could have been better, and come to a verdict. We will do our best to decide which of the two players had a better rookie season with the Pittsburgh Pirates.

PITTSBURGH, PA – SEPTEMBER 18: Bryan Reynolds #10 of the Pittsburgh Pirates in action during the game against the Seattle Mariners at PNC Park on September 18, 2019 in Pittsburgh, Pennsylvania. (Photo by Joe Sargent/Getty Images)
PITTSBURGH, PA – SEPTEMBER 18: Bryan Reynolds #10 of the Pittsburgh Pirates in action during the game against the Seattle Mariners at PNC Park on September 18, 2019 in Pittsburgh, Pennsylvania. (Photo by Joe Sargent/Getty Images) /

Bryan Reynolds’s 2019 Season

Reynolds was acquired by the Pittsburgh Pirates, along with right handed pticher and former top prospect Kyle Crick, from the San Francisco Giants in the 2017-2018 offseason for former NL MVP Andrew McCutchen. Reynolds didn’t see any MLB playing time in 2018, but made a lasting impact the following season in 2019.

Reynolds batted for a strong .314/.377/.503 line, a 131 wRC+ and OPS+. He hit 16 home runs and a Pirate rookie record 37 doubles in 546 plate appearances. He also put up some of the best numbers among all rookies in baseball.

Of the seven rookies who had at least 500 plate appearances in 2019, Reynolds was second in wRC+, wOBA at .371, OPS, and fWAR, and led all rookies in doubles. Even if you look at rookies with at least 300 plate appearances, he still ranks top five in many of the stats. Reynolds was also an extremely clutch batter with a .356/.427/.701 line in high leverage situations.

Reynolds also wasn’t a bad base runner. He was worth 0.7 base running runs above average, while also having a 28.1 feet/second sprint speed. That made him a faster runner than Francisco Lindor, Mookie Betts and Jean Segura.

While Reynolds wasn’t an awful fielder, he wasn’t great. Overall, he did have +5 defensive runs saved, +2 outs above average and was average range wise with 0 range runs above average, but had a -3.5 UZR and arm runs above average mark.

Jason Bay at first base vs. Milwaukee at PNC Park in Pittsburgh, Pennsylvania July 3, 2004 (Photo by Sean Brady/Getty Images)
Jason Bay at first base vs. Milwaukee at PNC Park in Pittsburgh, Pennsylvania July 3, 2004 (Photo by Sean Brady/Getty Images) /

Jason Bay’s 2004 Season

Like with Reynolds, the Pittsburgh Pirates acquired Jason Bay in a trade that sent away an All-Star outfielder. In this instance, it was Brian Giles being traded to the San Diego Padres for Bay, along with Oliver Perez and Cory Stewart. Bay had some big shoes to fill with Brian Giles out of the picture, but he did pretty well in replacing Giles.

In 2004, Bay accumulated 472 plate appearances and hit .282/.358/.550 with 26 home runs, 26 doubles and a 132 OPS+ and 130 wRC+. Bay was probably the best offensive rookie in 2004. The slugger had led the league in wRC+, slugging percentage, home runs, OPS, and wOBA at .382 (min. 300 plate appearances). Only Justin Morneau was even close to Bay, but still fell well short to him in multiple categories like wRC+ (118), wOBA (.362) and OPS (.875). Bay, like Reynolds, was also great in clutch moments, and possibly even better than 2019 rookie. Bay hit .364/.418.748 in high leverage situations.

While Bay might have been a great force in the batters box, he didn’t contribute much with the glove or on the base paths. Bay was worth -2.8 base running runs above average, and had even worse defensive marks. Bay had a 0 DRS, but -8.2 UZR, -4.1 range runs above average, and -5.2 arm runs above average in left field.

(Photo by Dustin Bradford/Getty Images)
(Photo by Dustin Bradford/Getty Images) /

The Verdict

Both Jason Bay and Bryan Reynolds had very similar offensive seasons. They sat nearly identical in both OPS+ and wRC+, around the 130-132 mark. That makes them top 10 rookie batters in Pittsburgh Pirates history with at least 450 plate appearances. Bay definitely was the better slugger, but Reynolds got on base more and was a better contact hitter.

However, since we are taking into account both fielding and base running, Reynolds takes the spot here. Bay was an awful fielder by many metrics, while Reynolds was overall average. While Bay was a below average runner, Reynolds was an average to slightly above average runner. This is all seen in their WAR. In terms of fWAR, Reynolds had a 3.2 mark while Bay was only worth 1.8 wins above replacement. bWAR showed even more of a gap with Reynolds sitting at 4.1 and Bay sitting at 2.2.

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What do you believe? Who had the better rookie season between Reynolds and Bay? Which rookies do you believe would have been the Pittsburgh Pirates best if the 2020 season was being played as planned? Ke’Bryan Hayes? Mitch Keller? Someone else? Sound off in the comments below! Let us know on Twitter and Facebook as well.

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