A healthy living blog from Marshfield Clinic Health System

Tips for preventing pitching-related injury

Pitching injuries - image

An increase in pitching injuries is an issue for all levels of play within the game of baseball.

An increase in pitching-related injuries is an issue for all levels of play within the game of baseball. Athletic directors, coaches, parents and players in school and club sport baseball leagues need to understand the importance of addressing pitcher safety. ​​

Tom Katz, Marshfield Clinic Health System physical therapist, gave his advice on this important topic.

Some factors that dramatically increase risk of injury include:

  • Overuse
  • Conditioning
  • Pitching mechanics
  • Pitching on multiple teams
  • Multiple games on the same day

Katz said that pitching is a skill that requires countless hours of practice to develop and master. To help prevent injury, USA Baseball and Major League Baseball have developed the Pitch Smart Guidelines. These guidelines are widely endorsed by baseball organizations and the medical community. Pitch count requirements are based on age:

Age Pitches/Day
7 – 8 50
9 – 10 75
11 – 12 85
13 – 16 95
17 – 18 105

Pitcher rest day requirements are based on the number of pitches thrown in a day. The criteria are divided into two categories:

Ages 7 – 14

  • 1-20 pitches/No rest day
  • 21-35 pitches/One rest day
  • 36-50 pitches/Two rest days
  • 51-65 pitches/Three rest days
  • 66 or more pitches/Four rest days

Ages 15 – 18

  • 1-30 pitches/No rest day
  • 31-45 pitches/One rest day
  • 46-60 pitches/Two rest days
  • 61-75 pitches/Three rest days
  • 76 or more pitches/Four rest days​

Age is a factor in bone and joint growth and development, and in hand and eye coordination. From a pitching development standpoint, it is recommended that throwing certain types of pitches begin at a particular age, plus or minus two years:

  • Fastball: age 8
  • Change up: age 10
  • Curveball: age 14
  • Forkball: age 16
  • Slider: age 16
  • Screwball: age 17

“Adopt​ing standardized pitch counts and rest day protocols has increased awareness about the health and safety of pitchers at all levels of baseball,” Katz said.

For more information regarding pitch count guidelines, visit: mlb.com/pitch-smart. ​

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