CBS White House reporter Mark Knoller, the unofficial White House record-keeper, noted that President Barack Obama's golf outing Sunday at the Beverly Country Club at 87th and Western was his 100th round since taking office.

Obama played 18 holes--his usual. His foursome included pals Marty Nesbitt, Eric Whitaker and director of advance Marvin Nicholson.

Other facts from ‏@markknoller....

"Pres Obama has played golf 47 times at Joint Base Andrews, 21 at Ft Belvoir, once at Army-Navy, 17 on Martha's Vineyard & 13 in Hawaii."

And now once in Chicago.