San Diego State's new conference era begins with a first-time opponent and an immediate stress test. The Aztecs host Texas State at 7:30 p.m. Saturday at Snapdragon Stadium, opening Pac-12 play against an offense averaging 523.3 yards per game, seventh in the Football Bowl Subdivision.

Every one of the league's eight football programs starts conference play Saturday. SDSU joined the Pac-12 on July 1 after 27 years as a founding member of the Mountain West; Texas State arrived after 13 seasons in the Sun Belt. Their first meeting will air nationally on the CW and locally on San Diego Sports 760.

The records are modest. SDSU enters 1-3, Texas State 2-2. The paths are not. The Aztecs' three FBS opponents are a combined 11-1, including 8-1 in games not involving SDSU. Texas State has won two straight by a combined 112-45 and averages 36.3 points, so the Bobcats arrive with speed and recent scoring volume rather than the usual unfamiliar-opponent ambiguity.

SDSU's defense has bent without matching the damage those opponents usually produce. The Aztecs allow 28.8 points per game; the same teams average 40.5 in their other games, according to SDSU's weekly notes. Linebacker Sione Hala leads the Pac-12 with 39 tackles and 20 solo stops. Three-time captain Tano Letuli follows with 32 tackles. Their assignments will stretch horizontally and vertically against an offense that has already cleared 500 yards a game.

The offensive counterweight is less settled. SDSU has started three different offensive-line combinations in four games after using the same five throughout last year's regular season. Quarterback Jayden Denegal has completed 55 of 98 passes for 597 yards, five touchdowns and five interceptions. Nathan Acevedo leads five receivers who have started with 12 catches, 130 yards and two scores.

Availability in the backfield adds another variable. Lucky Sutton missed the James Madison game and left the Toledo loss early after starting. Javion Kinnard also exited at Toledo, one week after carrying 33 times for 181 yards against James Madison. SDSU's preview did not provide a definitive Saturday status for either runner, so their past production should not be treated as a promised workload.

Tempo will make empty possessions expensive. If Texas State forces the Aztecs into a high-possession game, SDSU cannot repeat the first-half turnovers that helped James Madison build a 19-0 lead or lean on a defense indefinitely. The more sustainable route is to lengthen drives, finish them and keep Hala's unit from facing short rest against one of the country's most productive attacks.

The night also carries a backward glance. SDSU will honor its 2016 Mountain West championship team, which went 11-3, won a second straight league title and beat Houston in the Las Vegas Bowl. The Aztecs are 30-15 all time against teams from Texas, but none of those games involved this opponent. That group represents the program's former conference peak. Saturday asks the present roster to establish a first Pac-12 reference point of its own — not through ceremony, but by controlling the number of times Texas State gets the ball.