They were never likely to challenge Denver for the AFCW title, but there's still something comforting about seeing the Chiefs and Raiders open in losing fashion.
Alex Smith rushed for a better average per attempt (6.0) than he passed (5.8), which is never a good sign.
Smith, who recently got $30M for signing an extension through 2018, threw three picks and produced a 45.2 stinker of a QB rating. He was only intercepted seven times in all of 2013.
Jake Locker threw two touchdown passes for Tennessee, while old friend Wesley Woodyard sacked Smith in his Titans debut.
KC visits Denver next Sunday in a matchup that's not quite as daunting as the punditry would have had us believe.
As for the Raiders, their loss was a far more encouraging one, as Derek Carr threw two touchdown passes and posted a 94.7 QB rating in a turnover-free NFL debut.
But the Jets held Maurice Jones-Drew and Darren McFadden to 26 combined rushing yards on 13 carries, and limited Oakland to just 11 first downs.
Chris Ivory scored a 71-yard rushing touchdown, and fellow offseason acquisition Eric Decker caught five passes for 74 yards.
Geno Smith was 23/28, netting 228 yards and a touchdown pass, but turned it over twice.
Oakland will host Houston next Sunday.