More than just bragging rights will be decided Saturday in two of Baltimore’s longest-running football rivalries: City-Poly and Gilman-McDonogh.

When City and Poly meet for the 121st time at noon Saturday at M&T Bank Stadium, the No.11 Engineers (8-1, 6-1 division) will be looking to clinch at least a share of the Baltimore City Division I title.

On the other hand, the Knights (7-2, 5-2) probably need a win to seal a berth in the Class 2A North regional playoffs. If City loses, Dundalk could knock the Knights out of the fourth and final playoff spot with a win Friday over Owings Mills. And in the city, if the Knights win and No. 9 Dunbar suffers an unlikely loss to Digital Harbor on Friday, City would sneak into a share of the Division I title.

In the longest-running public high school rivalry in the country, Poly holds the series edge 59-55-6. Last season’s 16-13 Poly win broke a three-year City reign.

Gilman and McDonogh have not been playing quite as long. Saturday’s 2 p.m. matchup will be the 94th edition. The No. 2 Eagles host the regular-season finale which has turned into the MIAA A Conference championship game. The Eagles (8-1) stand alone in first place in the conference at 4-0, but No. 5 Gilman (6-3) is 3-1. A Greyhounds win would give them the title outright because the head-to-head result breaks the tie.

The Greyhounds lead the series, 55-33-5, but the teams have traded wins for the past four years with the visiting team taking the victory each time. Last year, McDonogh won, 22-14, and the past three games have been decided by an average of seven points.

As for the other big rivalry, No.10 Calvert Hall and No.12 Loyola extend their series to its 90th year when they meet in the Turkey Bowl on Thanksgiving Day at M&T Bank Stadium. Loyola leads that one 48-33-8. We'll have more about that closer to game day.