I'm not concerned about avoiding anything that happened three years ago or worried about letdowns or things of that nature. When you use the term 'letdown' you proceed with the assumption that this is a continuation of something that happened in the past.

Referring to the Steeler's poor start in 2006 following their Super Bowl win, as quoted in "Tomlin looks ahead" by Ed Bouchette, in The Pittsburgh Post-Gazette (1 August 2009)