Excel 2007.
I have two worksheets named "Open 1st Go" & "Open 2nd Go". The first
worksheet contains Column A (Rider), Column B (Horse), Column C (1st Go
Time), Column D (2nd Go Time), and Column E (Average Time). The second
worksheet contains Column A (Rider), Column B (Horse), and Column C (2nd Go
Time).

I need to match the rider/horse from the 1st go sheet exactly to the
rider/horse on the 2nd go worksheet (as some riders ride more than one horse
and therefore would have a different time) and bring back their 2nd go time
into Column D. This is the formula that I used, but it only matches the
rider, not the combination of rider/horse, and brings back only the one time
not distinguishing between different horse names.

=INDEX('OPEN 2ND GO'!$A$1:$C$34, MATCH(A2,'OPEN 2ND GO'!$A$1:$A$34,),
MATCH("TIME",'OPEN 2ND GO'!$A$1:$C$1,))