If you didn’t watch that Texas Xfinity Series race you just missed out on one of the best finishes ever. Sam Mayer came out on top of the situation. By just 0.002 seconds, it ties the second-closest finish in the second-tier NASCAR series. It is the closest Xfinity Series finish ever on a non-superspeedway. The highs of victory and the lows of defeat. There is no other way to describe the end of that race. Sam Mayer, Ryan Sieg, door to door. RSS Racing against JR Motorsports. David versus Goliath, except this time, Goliath raised his hands in victory. Mayer has figured out how to close these r…