In a strikeout, the reverse K is generally used to represent a called third strike. It's usually recorded on a scorecard. A batter will often comment on being hit by a strike three pitch with an upside-down K. This symbol was first introduced in 1869 by John H. Walsh of the United States National League. He had been a player-manager for the New York Metropolitans at the time they played their first season in 1869. When he brought his team back home after losing 1 game to 1 to the Buffalo Bisons, he told the press that they had better start recording strikeouts because he was finding plenty of wayward pitches over the plate. From then on, this symbol was adopted by several leagues across America. In Europe, it is known as a "derby strike" or "Walsh out". It is recorded as such on scorecards and can be seen today in major league baseball games when a pitcher strikes out the side against them (or any other number of batters). During his career, John H. Walsh struck out 602 batters in total. That's more than any other pitcher in history until 1914 when Charles Wilhelm Werner struck out 714 batters.