(That's code for trivia time. We're trying to sneak it past the MNT Blogger Sleuths that roam our posts continuously looking to pounce on any trivia ideas we might have...).
In anticipation of Landon Donovan reaching 100 caps SOMETIME this summer, we've been doing our homework on his career. As you already know, LD is the USA's all-time leading goalscorer with 35 goals. We won't even insult you by asking when he got his first cap and against whom; however, something did catch our eye. Having worn the #10 since Claudio Reyna retired after the 2006 World Cup, Landon spent most of his international career wearing the #21 shirt. But not on the day he scored his first goal.
Jersey number and significance, por favor... (hint - there's a theme involved)