He was selected to play for the USA team against the Japan in 1977 and 1978, where he met some very special friends from the Japanese national team, Tatsunori Hara and his close friend Suguru Egawa, which Christopher roomed with at USC in 1978, where the Trojans won the national title in Omaha, Nebraska.

After touring Japan with the USA All Stars in 1978, Christopher signed a professional contract with the Texas Rangers.

He proceeded to play in the Major Leagues with the Montreal Expos in 1981 and 1982, and San Francisco Giants where in 1983, he finished the year hitting .328.

After his career in the MLB, he signed at the time, the most lucrative three-year contract ever, with the Yakult Swallows of the Nippon Professional Baseball (NPB).

In two seasons with the Swallows, he played in 68 total games, having 36 hits with five home runs and 18 RBIs for a .202 batting average.