Red Sox DH David Ortiz believes that, after launching a homer to right field in the sixth game of a rehab assignment with Triple-A Pawtucket, he’s ready to rejoin the Boston lineup and help the big league team. The 37-year-old said that he expects to be in the Red Sox lineup on Friday night, when his teammates return to Boston to open a 10-game homestand.

The timing of Ortiz’s anticipate activation is intriguing given the incentive structure of his contract. His two-year, $26 million deal includes a guarantee of $11 million in 2014 that can increase to $15 million based on how much time he misses this season related to the right Achilles injury that left him unable to play over the final two-plus months of last year. If he is on the DL for 21-40 days this year related to the Achilles, he would make $13 million next year; if he’s on the DL for 41 or more days related to the Achilles, his earnings would top out at $11 million.