As Year 17 of the competitive portion of the Yankees-Mets crosstown rivalry starts tonight, here’s a look at some trends, developments and stories to expect in this round of the Subway Series:

THE PHENOM VS. THE EMPIRE

Tomorrow’s game ranks as the most anticipated matchup of the series with Matt Harvey (5-0, 1.93 ERA) taking the Citi Field hill for his first career Subway Series start. Last year, the Mets twice started a pitcher in a groove — Johan Santana following his no-hitter and R.A. Dickey following consecutive one-hitters — against the Yankees, and the Yankees blasted each of them. Harvey, a Connecticut native, grew up a Yankees fan.

MISSING A METS KILLER

Throughout his career, Derek Jeter has torched the Mets for a .368 average (127-for-345), 13 homers, 43 RBIs, 19 stolen bases and a .968 OPS in 84 games. But Jeter will miss the matchup with his ankle injury. That means it’s Jayson Nix’s and Reid Brignac’s show at shortstop for the Yankees.

CANO PROBLEM

Robinson Cano, the Yankees’ best hitter, was a monster against the Mets last year. The superstar second baseman went 8-for-22 in the Subway Series, smashing four homers and driving in seven runs. Considering who the Mets are pitching this time, they may need some luck to keep Cano from repeating that kind of outburst.