NEW YORK, July 21 — A single foul ball can upend a season, and for baseball, the discussion around protective gear is once again in play. The case of Kuroda-Grauer — a testicular rupture suffered on a line drive — has resurfaced a debate as old as the sport itself: why do so many players still refuse to wear a protective cup?
The protective cup has been used in sports for over a century, its hard plastic shell and foam padding a familiar piece of kit in boxing, football and hockey. In baseball, however, adoption has never been universal.
The American Academy of Orthopaedic Surgeons recommends cups for high-impact activities. The technical reality is that a foul ball to the groin can produce injuries ranging from bruising to testicular rupture. Yet a 2019 study found that only about 30% of minor league baseball players regularly wore a cup.
The numbers under the hood
Position players, especially infielders, are taught to expect a screaming line drive at any moment. Many wear cups as a matter of routine. But a significant portion of players find the traditional cup uncomfortable — restrictive, hot, prone to shifting when running or sliding — and they take their chances.
The detail that matters is that the 2019 minor-league data is the only recent large-scale gauge of actual behaviour, and it shows a persistent reluctance. Manufacturers have responded.
Over the past decade, they have developed more flexible, low-profile cup designs, aiming to reduce the discomfort that drives players to skip the gear. The engineering challenge is straightforward enough: maintain impact protection — a hard outer shell to disperse force, foam to absorb shock — while shrinking the profile and improving ventilation. As ever, the trade-off between protection and mobility is the central tension.
A history of stopping short
The protective cup dates to the early 20th century, first appearing in boxing and then adopted by other contact sports. In baseball, its use has always been uneven. Some players treat the cup as essential equipment for infield work or catching; others, particularly outfielders and pitchers, often leave it in the locker room.
The Kuroda-Grauer injury — a testicular rupture resulting from a foul ball — may prompt renewed discussion about protective gear in baseball. Whether that translates into a shift in culture, or merely a brief spike in sales, remains to be seen.
For now, the gap between official recommendation and player practice remains wide. The AAOS advises cups for high-impact activities, but the sport itself does not mandate them for all positions. The industry continues to iterate: the newer generation of cups aim to be less obtrusive, more breathable, easier to wear for nine innings.
The question is whether that will be enough to move the needle beyond the current roughly 30% adoption rate seen in the minors. The next season will show whether the Kuroda-Grauer case changes anything — or if, as has happened before, the protective cup remains an option that many players are still happy to decline.
