Pitchers will receive more intensive checks for illegal substances across MLB in 2023, according to a memo sent to all 30 teams, via Jayson Stark of The Athletic.
"Umpires' inspections of pitchers' hands and fingers, which began last season, will increase in 'frequency and scope,' the memo states," per Stark. "Inspections are expected to be far more thorough than the often-perfunctory checks that umpires performed last year."
The checks could come before or after innings, and umpires can check fingers, hands, hats, gloves, belts/waistlines and pants.
This article will be updated soon to provide more information and analysis.