On December 4th, the Cavaliers took down the Bulls in Chicago to win their 12th straight on their 13 game winning streak. Two games later, the Bulls started an impressive win streak of their own, ripping off seven in a row, including wins over some of the better teams in the EC like Boston and Milwaukee. What’s changed for the bullish Bulls? Nikola Mirotic returned after missing the first 23 games of the season with injuries suffered from getting punched in the face by teammate Bobby Portis. The two must have patched things up, since they now anchor a suddenly formidable bench unit for Chicago.