To downplay something is to act as if it's not very important. If you're trying to convince your friends to play poker with you, you might downplay the fact that you 're.
tr.v. down·played, down·play ·ing, down·plays. To minimize the significance of; play down: downplayed the bad news. American Heritage® Dictionary of the.
it is reverse form of set phrase " play down", meaning to reduce the seeming importance of (something). Mega Rayquaza vs Mega Charizard vs M. Metagross - AMV - 720P