In a game which featured five ties and seven lead changes, Fales completed 28 of 35 passes for 431 yards and three touchdowns.
Fales threw touchdown passes of 83- and 77-yards to Jarrod Lawson and Chandler Jones, respectively, in the second quarter and San Jose State (3-3, 2-1 Mountain West) piled up 608 yards of total offense.
Lawson finished with 104 yards receiving and a game-high 98 yards rushing, including an 18-yard touchdown run in the third quarter.
Tyler Winston added eight receptions for 151 yards and a score for the Spartans.
Garrett Grayson had 310 yards passing and three touchdowns for Colorado State (2-4, 0-1 Mountain West), but threw two second half interceptions which led to 10 SJSU points.
Kentucky will have to replace five starters on defense in 2016, and it's deep recruiting class should help address the need.
A group of transfer quarterbacks and the top wide receiver recruit in the country are among those who could emerge to make a big impact in the Pac-12.
Now is the perfect time to take a closer look at the strength and weakness of each Big 12 team after signing day, beginning with Baylor.
With signing day behind us, here's an early look at how teams stack up in the Pac-12 heading into next season.
The Spartans went into signing day needing to get stronger at receiver, and they did just that, signing four wideouts including two in the ESPN 300.
Were Oklahoma's running backs or Baylor's offensive linemen more impressive in 2015?