Youth is served as Joao Fonseca, 19, beats elders for MGM Slam exhibition title
Brazil's Joao Fonseca, by far the youngest and perhaps the least heralded competitor, won the MGM Slam exhibition tennis tournament on Sunday at T-MobBrazil's Joao Fonseca, by far the youngest and perhaps the least heralded competitor, won the MGM Slam exhibition tennis tournament on Sunday at T-Mob