I would have to say pitcher also with a very close second to catcher
I copied this for your enjoyment...
Batters and pitchers had the highest absolute number of injuries due to impact with a batted ball in games.
A total of 22% of the total game injuries to pitchers occurred from batted balls, and about one third of game injuries to third basemen involved batted balls.
Only 2.6% (7/241) of injuries to pitchers involved a batted ball to the head, compared with 8% for batters (24/303) and 9% for third basemen (10/96).
The authors concluded that neuromuscular training may reduce ACL injuries in females if the training includes plyometrics, balance, and strengthening exercises performed once per week for at least 6 weeks.
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC1941294/
Game injuries from impact with a batted ball by position and injury type from 1992?1993 through 2003?2004 are displayed in
Table 8.
Batters and pitchers had the highest absolute number of injuries due to impact with a batted ball in games. A total of 22% of the total game injuries to pitchers occurred from batted balls, and about one third of game injuries to third basemen involved batted balls. Only 2.6% (7/241) of injuries to pitchers involved a batted ball to the head, compared with 8% for batters (24/303) and 9% for third basemen (10/96). Four of the 8 head injuries from batted balls that resulted in 10+ days of time loss involved the third baseman.
in addition to sliding injuries, much like other collegiate sports,
preventing knee injuries is a concern in women's collegiate softball. It is important to discuss noncontact ACL injuries in relationship to women's softball because of the likelihood that knee internal derangement injuries involve the ACL.
A total of 65% of all injuries in these data were noncontact. Noncontact ACL injury often is associated with a planted foot and deceleration, resulting in a valgus knee position due to a combination of motions and rotations at the hip, knee, and ankle that potentially include hip adduction and internal rotation, knee abduction, tibial external rotation and anterior translation, and ankle eversion.
4,
8 This position is common in competitive athletics, including women's softball, but adequate neuromuscular control may provide knee stability without injury.
4 In a recent meta-analysis of neuromuscular ACL interventions,
13 the findings of 6 randomized controlled trials or prospective cohort studies were assessed for effectiveness.
The authors concluded that neuromuscular training may reduce ACL injuries in females if the training includes plyometrics, balance, and strengthening exercises performed once per week for at least 6 weeks. 13 Developing preventive neuromuscular training programs specific to softball and research on the effects of the training on ACL injury rates in collegiate softball players may be important areas for future investigation.