Luis Guerrero Boston Red Sox Pitcher

       
 
Age: 24
Born: August 5, 2000
Birthplace: Bani, DR
Height: 6-0
Weight: 215
Bats: Right
Throws: Right
   
Drafted: 17th round, 2021 by BOS
How Acquired: Draft
College: Chipola
High School: Bani (DR)
ETA: Early 2025

Photo © Kelly O'Connor
Pronunciation: ---
First Pro Contract: August 1, 2021 (BOS)
Signing Scout: Dante Ricciardi
Signing Bonus: $122,500
Rule 5 Draft Eligible: December 2024
MLFA Eligible: November 2027
   
Pro Debut: June 6, 2022 (FCL)
Added to 40-man: September 6, 2024
MLB Debut: September 8, 2024 (BOS)
Service Time (1/25): 24 days
Options Remaining: 3 (0 used)
Contract (2025): ~League Minimum
   
Twitter: @guerrero_sadiel
Instagram: @l_guerrero29

 
 
 
 
 
     
  Scouting Report & Links      
         
  Physical Description: Athletic frame. Slightly undersized. Sturdy, filled out. Minimal remaining projection. Runs with a limp and cannot bend right leg due to a childhood injury as a result of which his right leg is shorter than his left. Condition does not limit him at all on the mound or when fielding his position.

Mechanics: Throws from a three-quarters arm slot. Starts on the first base side and has a high leg kick. Significant effort in delivery. Very short stride. Long arm swing behind and then explodes forward with a lightning-quick arm. Back leg does not bend much, if at all, during delivery, but he is still able to drive off it. Will add a trunk twist on some occasions to change his timing when coming to the plate.

Fastball: 96-98 mph. Tops out at 100 mph. Velocity increased substantially after signing. Pitch shows life up in the zone, but is on the straight side and plays below its velocity. Command and control are erratic, but have improved as 2024 has gone on. Potential plus offering with refined command.

Changeup: 87-89 mph. Has evolved from his splitter in 2024 and become his go-to out pitch, with premium bat-missing ability. Has shown much better feel for the pitch as the season has gone on. Has shown the ability to land it in the zone or get it out of the zone when looking for chases. Pitch shows late, splitterish dive down and away from left-handed hitters. Potential plus pitch.

Slider: 83-86 mph. Longer, 10-to-4 break. Pitch shows two-plane shape and tight rotation at its best. Has gotten better as he has moved up the ladder and started to throw it more. Can get inconsistent at times, but will flash bat-missing potential. Potential solid-average offering.

  Splitter: 83-86 mph. Extremely low spin rate. At times has served as his primary out pitch, but would go through extended periods in which he would apparently lose feel for the pitch. Apparently shelved the pitch in mid-May 2024 in favor of the changeup after struggling to throw the splitter for strikes. When the pitch was good, had confidence in and feel for the pitch, which showed late, parachuting movement down in the zone. Had the potential to miss bats at the highest level and was especially effective against left-handed hitters. Did not show the same quality in outings scouted in early 2023, during which he struggled to land pitch in the zone and throw competitive enough pitches to elicit swings, but he only threw it sparingly and therefore may have been throwing less often in order to focus on developing his slider. Feel for the pitch started to come back towards the end of 2023.

Career Notes: Born in the Dominican Republic and moved to Boston as a child. Had surgery on his right knee as a child and required a nine-month hospitalization. As a result, development of the muscles in his right leg was hindered and his knee has very little bend. Participated in the 2021 MLB Draft League. Used six different pitches in college, but the Red Sox asked him to focus on his fastball, splitter, and slider after signing. Team expected him to break camp in 2023 with High-A Greenville, but performed so well in spring training that he was assigned to Portland. Received first MLB call-up in September 2024 after an extended stretch of success in Triple-A spurred by improved command and control.

Summation: Potential middle-inning reliever. Ceiling of a late-inning, leverage reliever. Has some of the best raw stuff of any relief arm in the system, but needs to improve command and control and consistency. Walks will always be an area of concern, but has shown much better strike throwing ability as 2024 has gone on. Changeup/splitter is a potential separator pitch with the ability to miss bats at the highest level. Fastball has good velocity, but is hittable and he will have to show the ability to command it to succeed. Has plus makeup and is regarded as one of the hardest workers in the system. Very popular with teammates.

Links
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    Pitching Stats                                          
  year team lg level org age w l era g gs sv ip h r er hr hbp bb so whip k/9 bb/9
2020 Chipola NJCAA JuCo --- 19 2 1 1.88 8 6 1 24.0 16 12 5 4 0 14 36 1.25 13.50 5.25
  2021 Chipola NJCAA JuCo --- 20 6 2 3.72 14 5 0 58.0 43 32 24 1 0 38 95 1.40 14.74 5.90
2022 FCL Red Sox FCL Rk Bos 21 0 0 0.00 2 0 2 2.1 0 0 0 0 0 0 3 0.00 12.86 0.00
  2022 Salem Red Sox Car A Bos 21 4 3 4.18 18 0 6 23.2 15 13 11 1 4 14 37 1.23 14.07 5.32
  2022 Greenville Drive SAL A+ Bos 21 0 2 2.08 7 0 1 13.0 11 5 3 0 1 3 19 1.08 13.15 2.08
  2023 Portland Sea Dogs East AA Bos 22 3 2 1.81 43 0 18 49.2 26 14 10 2 2 30 59 1.13 10.69 5.44
  2023 Worcester Red Sox IL AAA Bos 22 0 1 7.71 6 0 1 4.2 4 4 4 1 0 7 9 2.36 17.36 13.50
  2024 Worcester Red Sox IL AAA Bos 23 5 3 3.31 42 0 2 54.1 39 22 20 6 9 32 79 1.31 13.09 5.30
  2024 Boston Red Sox AL MLB Bos 23 0 0 0.00 9 0 0 10.0 6 1 0 0 0 2 9 0.80 8.10 1.80
  2025 Boston Red Sox AL MLB Bos 24     stats                            
   
     
  Advanced Stats & Splits
   
     
  Awards   SoxProspects.com Awards  
  Red Sox Minor League Relief Pitcher of the Month (July 2022)
Futures Game All-Star (2023)
2023 Portland Sea Dogs Pitcher of the Year
2023 Red Sox Minor League Relief Pitcher of the Year 
2023 Eastern League Season-End All-Star
  2023 SoxProspects.com Pre-Season All-Star 
2023 SoxProspects.com All-Star
2024 SoxProspects.com Pre-Season All-Star
2024 SoxProspects.com All-Star
 
   

   
     
 
 
 
     
 
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