Ryan Vogelsong was interviewed on the local Squirrels network yesterday. He said he never used any substance...including the rosin bag. You can come to your own conclusions based upon his roller-coaster career, including 3 years in Japan...
https://www.baseball-almanac.com/players/player.php?p=vogelry01He did say that the baseball today is so different, he likened it to throwing a cue ball...
