This is Leyland's typical lineup against left-handers; he used it in Games 2 and 3 of the division series against the Athletics.
And, a lefthander is who they are facing: Andy Pettitte, who the Tigers did not face during the 2012 regular season. Due to the vagaries of the schedule, Pettitte has not faced the Tigers since April 2008; the only current Tiger who played that day is Cabrera. Peralta should enjoy tonight's matchup; he's 6-for-16 with two walks, a double, a triple and three home runs against the Yankee lefthander, who would tie Dave Stewart for most career wins in the LCS round if he can defeat the Tigers tonight. His opponent will be righthander Doug Fister.