You can play with it through here to see it yourself. I'm going from 2021-2024 and only qualified 1B. I'll admit the 3' is a bit of an overstatement on my part. He's fine until he gets to about 6' and then he craters.
https://baseballsavant.mlb.com/visuals/statcast-infield-defense?type=Fielder&playerId=665489&startYear=2021&endYear=2024&result=&direction=&normalize=undefined&roles=&esrGT=0&esrLT=1&evGT=0&evLT=125&distGT=0&distLT=2&batside=&viz=intercept_fielder_starting_position_
Distance Travelled Attempts Outs (%) Estimated Outs (%) Outs Above Average
0-3ft 123 117 (95%) 104 (85%) +13
3-6ft 152 130 (86%) 129 (85%) +1
6-10ft 179 143 (80%) 144 (80%) -1
10ft-13ft 136 91 (67%) 95 (70%) -4
13ft-16ft 112 56 (50%) 66 (59%) -10
16ft-22ft 141 74 (53%) 82 (58%) -8
22ft-32ft 127 68 (54%) 73 (58% -5
32ft-51ft 104 76 (73%) 81 (78%) -5
51ft+ 149 125 (84%) 130 (87%) -5
I'm not sure how good that is going to look, I'm on my phone and I'm not going to spend more time trying to make the s*** line up.
Alonso IIRC is the 2nd worst defender by OAA in that time frame at -13 OAA.
From 6'-51'+ Alonso is at 67% success with -19 OAA. Guerrero is at 67% with -39 OAA. When we get into the more nitty gritty details to see where the difference in actual performance is Alonso is better defending straight up and close to the line and similar into the 2B hole but more importantly he has better range. He's worth 6 OAA at 3-6 feet compared to Guerrero's 1 and he gets to 90% of balls and from 6-10' he's worth +8 compared to Guerrero's -1 with an 86% success rate. Like Guerrero Alonso really drops off at the 10'+ range and in that same 10-13 foot he's actually worse than Guerrero but as a whole beyond that 3-6' range he out performs Guerrero.
Vladdy looking good on defence is due to the fact that we as fans aren't properly able to judge his range. Its very much like the outfield defence problem, Varsho can make this 70% catch (4.1s, 63ft travelled) look easy standing up and camping under it. While Tyler Freeman has to do an incredible dive to make this 85% catch (4.0s, 55ft travelled). Ask any fan and they will call Freeman's catch better even though the dive was only making up for a horrible jump and slow foot speed. As well Guerrero is far and away the best 1B in baseball at picks/scoops and it's not really close. I'm not going to say that Statcast is perfect but the eye test is even worse.
Varsho: https://sporty-clips.mlb.com/MzVCa1FfWGw0TUFRPT1fVlFoUlZnQlZVQVlBQ2xzRVV3QUFCUUlBQUFBRVVWRUFVQU1NQndNQUFnb0VDUUZX.mp4
Freeman:https://baseballsavant.mlb.com/sporty-videos?playId=76e627f2-21b9-49c5-847f-c78e4a67e5e0