In a bit of marketing cross-pollination, Kyrie Irving's Uncle Drew character takes center stage in "Chapter 4," the latest installment of Pepsi's long running ad campaign. Showing off an exclusive pair of Nike Kyrie 1s, Uncle Drew is in Miami, and he has a score to settle on the basketball court. An epic game of H-O-R-S-E is in store for the lucky witnesses, in which Drew squares off against a hoops legend named Walt, played by Ray Allen. Baron Davis and JB Smoove also make grey-haired appearances. Check out the clip below.