![2021 MLB Draft: Red Sox select No. 1-ranked prospect Mayer](https://sportshub.cbsistatic.com/i/r/2021/07/11/6940e479-8c9a-425e-8342-367ca505880a/thumbnail/1200x675/1c86f6e380e17cc8307f3de7f078a6fa/marcelo-mayer-1.png)
MLB Draft 2021: Red Sox select prep shortstop Marcelo Mayer with
![2021 MLB Draft: Red Sox select No. 1-ranked prospect Mayer](https://www.bostonherald.com/wp-content/uploads/2021/07/AP21166668007699.jpg?w=1024&h=683)
Breaking down standouts of Red Sox' 2021 draft class
![2021 MLB Draft: Red Sox select No. 1-ranked prospect Mayer](https://sportshub.cbsistatic.com/i/2021/07/12/6a84c1ec-025a-4329-82eb-345d06fa15e3/mlb-draft-davis.png)
MLB Draft 2021 first-round takeaways: Pirates take Henry Davis
![2021 MLB Draft: Red Sox select No. 1-ranked prospect Mayer](https://library.sportingnews.com/2021-08/mlb-draft-060820-ftrpng_mqiq54ci1p761lnaobkuanou8.png)
MLB Draft 2021 dates, start time, pick order, TV channels & more
![2021 MLB Draft: Red Sox select No. 1-ranked prospect Mayer](https://cdn.theathletic.com/app/uploads/2022/07/18014238/AP22199071367949-scaled.jpg)
Boston Red Sox 2022 MLB Draft: Picks, bonus pool, slot values
![2021 MLB Draft: Red Sox select No. 1-ranked prospect Mayer](https://img.mlbstatic.com/mlb-images/image/upload/t_16x9/t_w1024/mlb/ouytcztsbxevtjtbs25q)
Top Red Sox prospect Marcelo Mayer collects four hits
![2021 MLB Draft: Red Sox select No. 1-ranked prospect Mayer](https://images2.minutemediacdn.com/image/upload/c_fill,w_720,ar_16:9,f_auto,q_auto,g_auto/shape/cover/sport/https-3A-2F-2Fbosoxinjection-com-2Fwp-content-2Fuploads-2Fgetty-images-2F2018-2F08-2F1234118871-850x560-ec08a73f598dcaf1d02762e65eb36809.jpg)
Red Sox: Marcelo Mayer's prospect ranking shows he was the right
![2021 MLB Draft: Red Sox select No. 1-ranked prospect Mayer](https://bdc2020.o0bc.com/wp-content/uploads/2023/05/UVIG2OTWTLRPDRTZK6KO5D2SJ4-646fc7fa8e46a-768x432.jpg)
Where Red Sox prospects rank in recent top prospect lists
![2021 MLB Draft: Red Sox select No. 1-ranked prospect Mayer](https://img.mlbstatic.com/mlb-images/image/private/t_16x9/t_w1024/mlb/iu5ulf7prykerwxmxh6o)
Marcelo Mayer drafted No. 4 by Red Sox in MLB Draft