The Los Angeles Angels announced the termination of pro scout Justin "Boomer" Prinstein after he was discovered filming Colorado Rockies coaches during a recent game.
Known in the baseball scouting community as "The Baseball Spy," Prinstein was caught on video using a handheld device to capture the Rockies’ coaching staff, a breach of MLB regulations that forbid the use of technology to gain a competitive edge.
A History of Tech‑Driven Sign Stealing
The incident resurfaces memories of the Houston Astros’ 2017 sign‑stealing scandal, which led to sweeping league penalties and a renewed emphasis on monitoring electronic sign‑stealing methods.
Angels general manager Perry Minasian acted swiftly, dismissing Prinstein on the spot and issuing an apology to the Rockies, a move that spared the club from potential league discipline.
While the Angels avoided formal sanctions, the episode underscores the growing vigilance required of clubs regarding the use of electronic devices in scouting and in‑game operations.
The fallout also reverberates across the league, with the New York Yankees having faced allegations of similar conduct later in the previous season, further fueling debates over the integrity of sign‑stealing practices.