If you were holding off on finishing your placement matches or wanted to climb to the next tier, today is your last chance to do so in Season 3. Blizzard's third competitive season for the FPS ends today at 4 PM PST.
If you complete your placement matches, you'll be eligible for a player icon and spray, and those that participated in the season are also eligible for other rewards based on rank.
Competitive points earned in this fashion can be spent to acquire cool unique items that you can show off in seasons to come.
Season 4 is scheduled to begin on February 28 at 4 PM PST.