With just over a month left in the regular season, Mets' first major player Pete Alonso and Astros designated hit / outfielder Jordan Alvarez look like clear front-runners Rookie of the Year honors in their respective leagues. Alonso has been brilliant all season, and his excellence this summer has helped lead the Mets to despair and embark on a national wild card league dispute. Meanwhile, Alvarez has given the already-loaded Astros another great full-time striker full of them since the club promoted him to the majors on June 9. But which of the two would you prefer for the long haul?
At least in terms of home runs, 24-year-old Alonso has enjoyed one of the greatest first seasons in recent history. The Mets have been in existence since 1
Statcast looks even more favorable to the 22-year-old, making Alvarez production sharper, giving him a .421 xwOBA eyebrow lift, which ranks fifth among those with 100 or more trips to the plate. Only offensive luminaries Mike Pasteur Cody Bellinger Nelson Cruz and Christian Yelich surpass Alvarez in this category. Trout and Yellich have already won MVPs, while Bellinger can join them in the next few months. Meanwhile, Alvarez's actual WOBA (.456) exceeds at least 10 points. His .329 / .420 / .703 line with 21 homers in only 257 PAs amounts to 190 wRC +, which ranks first among those with 200 plus plus plate, while he has already gained 2.9 fWAR.  The left-winged Alvarez, like Alonso, has brutal pitchers with all hands (199 wRC + against righteousness, 170 wRC + against south paws). While Alvarez's .367 average for balls in play seems unlikely to hold up as he moves forward, it's clear that the tidy Astros have another world-class offensive building block on their hands.
MLB.com placed Alvarez in 23rd place among the prospects of the game during their promotion, while Alonso was 51st, shortly before the Met picks to put him on their roster for the season opener. Obviously, they have now deserved better than even those high rankings. It looks like Alvarez is likely to become one of the best pickups in recent memory since the Astros acquired him from Dodgers for relief Josh Fields in August 2016 while Alonso was a thief draft for New York – who landed him in the second round in 2016. These two can now be considered the most fierce baseball rattles in just a few months in their respective careers, and are likely to be honored with ROY honors. But what is the better building block?
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