Brock Lesnar vs. Big Show was confirmed for the upcoming WWE Royal Rumble PPV on 1/26 live from Pittsburgh, Pennsylvania on Smackdown this week.
Here is the updated card for the show.
30-Superstar Royal Rumble Match
Confirmed entrants so far: Batista, Alberto Del Rio
WWE World Heavyweight Championship Match
Randy Orton (c) vs. John Cena
Brock Lesnar vs. Big Show