Now that is poor sportsmanship. 2001. Israel Cristostomo Alcántara kick Jeremy Salazar in the face mask then charges and throws unsuccessful punch at Cedeño.
Seen on the Imagur photostream linked earlier, the comments go to reddit where the wikipedia entry on the incident is pointed to.
Where also a commenter says, "With moves like that he ought to check out Japanese Binocular Soccer." Is that even a thing? Why, yes, apparently it is.