Complex sentence: In March 1999 when he turned 16 he began his soccer career with London City in the Canadian Soccer League and made his debut on May 28 against the North York Astros, and would play with London until he began playing college soccer with Humber College in 2001.
Split into simpler sentences: In March 1999 when he turned 16 he began his soccer career with London City in the Canadian Soccer League. Cameron contunied playing with London until he began college soccer with Humber College in 2001.