Eric Mastalir (born January 11, 1968) is an American sports executive and former track athlete. He currently is the senior director of global strategic alliances at Nike. He has a twin brother who duplicated many of the same accomplishments. A native of Sacramento, California, Mastalir attended Jesuit High School. Both brothers had virtually the same, notable personal best in high school, Mark 4:04.15 (the SJS record), Eric 4:04.23 from the same race at the Sac-Joaquin Section meet a week before the State meet. Later in the day, Eric would also set the SJS record in the 3200. A week later, both became state champions at the 1986 CIF California State Meet, Eric winning the 3200 in a meet record 8:44.95 while Mark won the 1600 by almost 4 seconds in 4:07.81. The previous year both brothers