George Wolkow may only be 19 years old, but the outfielder is making a push to ascend to the Chicago White Sox's big league roster sooner rather than later.

Jamie Sabau/Getty Images Share The White Sox officially added left-hander Martin Perez to their rotation Tuesday, agreeing to a one-year, $5 million deal with the 33-year-old veteran of 13 seasons.

a combined batting line of .260/.358/.523 and a 121 wRC+. If he can bring some of that up to the majors with the White Sox, he has less than three years of service time and can therefore be ...

Murray/AP Share The White Sox agreed to terms on contracts with ... Through May, Vaughn was batting .199/.264/.313 with four homers, but hit .303/.340/.483 in his last 22 games.