Grand slams are difficult to hit in baseball. Holes-in-one are nearly impossible to hit in golf.
Combining the two? Well, that's even harder.
In the third inning of Sunday's Oakland Athletics-Baltimore Orioles game, the A's Brandon Moss crushed a home run to center field with the bases juiced.
The story ended up not being about the grand slam, but what happened to the ball once it landed.
The baseball magically sunk into the ground, giving Moss the improbable grand slam/hole-in-one combo.
The A's went on to win the game 11-1.