You thought you had the browser face-off signed and sealed until Google introduced its fleet-footed Chrome browser. Has it been enough to change the game?

With help from CNET's Seth Rosenblatt and's Josh Lowensohn, CNET's Brian Tong takes Internet Explorer, Firefox, Safari, and Google Chrome through a rigorous four-round contest--to determine which contender makes all-around champ.

Sorry, Opera, looks like you're sitting this one out.

Jessica Dolcourt reviews smartphones and cell phones, covers handset news, and pens the monthly column Smartphones Unlocked. A senior editor, she started at CNET in 2006 and spent four years reviewing mobile and desktop software before taking on devices.