Dunn's OPS+ the last 3 years 141, 114, 136. he's 27. Teixeira's are 144, 126, 150, he's also 27. It looks like you'd rather have Teixeira especially with defense counted in, but theres nothing wrong with Adam Dunn, he'd certainly be an upgrade over the spriraling Delgado (161, 131, 103 and 35 years old)