Update: Frog and Firkin has rallied to pull slightly ahead of Zona 78, 576-529. Don't forget to click the photo of your favorite pizza, then like it. 

After 28 victory celebrations and 28 eliminations, the Pizza Madness bracket is down to just four.

Grandma Tony's Pizza & Wings and Rocco's Little Chicago Pizzeria join Frog and Firkin and Zona 78 in the semifinals.

Grandma Tony's rallied to pull even with Argenziano's with less than an hour to go on Sunday night. Then the official pizza of Tucson's Gaslight Theatre pulled off an amazing last-second shot and won by 31 votes, 781-750.

Meanwhile Rocco's crushed Bazil's by more than 200 votes, 612-410.

We'll do the left half of the semifinal bracket this week. Vote for Frog and Firkin vs. Zona 78. Who has the best pizza? Frog and Firkin's fans love the UA-area pub atmosphere, great patio and huge pies. Zona 78, which has a north-side location and an east-side joint, specializes in local ingredients and wood-fired pizza.