Pretty sure it is way uphill.
Calling Art Maffei and Joe Mayo....
Brian,
There is the equivalent of what seems like a 3-4 story 'hill' right in front of the tee on # 18 at Riviera. Then comes a gradual up-sloping fairway bending to the right with the green 475 yards away, the clubhouse at the apex in the distance, the 'Freddie Couples' eucalyptus trees lining the right side of the fairway, and 'velcro/ kikuyu' grass waiting to arrest any forward motion of the golf ball if you miss the fairway or the green.
The tee shots I watched for the first 3 days sometimes included a low rocket-launch down the left side of this banana shaped hole, but probably from the cameras used, AND the steep rise right in front of the tee, everything seemed low to the TV viewer.
Wish you all could be here, it's our west coast Augusta.