Jackson Arley Martínez Valencia, or simply Jackson, is a Colombian professional footballer who plays for, and captains, FC Porto in the Primeira Liga. He is often named Cha Cha Cha for his dance-like moves on the pitch. Noted columnist Tim Vickery describes him as "an out-and-out goalscorer, a front-to-goal centre-forward who can finish off both feet". Jackson has also represented Colombia's national team since 2009, where he has gained 29 caps and scored 10 goals so far. He represented the country at the 2011 Copa América and the 2014 FIFA World Cup. ... more on Wikipedia