NCAA Baseball treated fans well on Friday. The action-packed opening day of the NCAA Tournament included six walk-off wins, the most since the tournament expanded in 1999. Clemson, UNC, UC Irvine, Mississippi State, LSU & South Carolina each won their respective games with a walk-off hit. In 2014 and 2001, the NCAA Tournament saw five walk-offs in one day but never six. Even wilder, the day is not over. Arizona and Grand Canyon are closing the chaotic day with a heated battle in the Tallahassee Regional. The opening, double-elimination rounds began at noon today and will run throughout the sta…