The current lineup for the upcoming UFC Vegas 78 event has undergone changes as a bantamweight fight has been canceled.The planned bout between Brady Hiestand and Da'Mon Blackshear, scheduled on August 12, 2023, at the Apex facility in Las Vegas, has been canceled. The change is attributed to Hiestand's reported staph infection, which led to his withdrawal from the bout.According to recent reports from combat sports journalist Nolan King, Blackshear currently awaits a short-notice opponent:"Next week's #UFCVegas78 has taken another hit, as sources say Brady Hiestand (10-2) is off the card due to a staph infection. Da'Mon Blackshear (13-5-1) awaits a new opponent."Check out King's tweet below:Nolan King@mma_kingsNext week's #UFCVegas78 has taken another hit, as sources say Brady Hiestand (10-2) is off the card due to a staph infection. Da'Mon Blackshear (13-5-1) awaits a new opponent. pic.twitter.com/asTT2nYZdo3010Next week's #UFCVegas78 has taken another hit, as sources say Brady Hiestand (10-2) is off the card due to a staph infection. Da'Mon Blackshear (13-5-1) awaits a new opponent. pic.twitter.com/asTT2nYZdoThe upcoming Fight Night event earlier encountered another cancellation, as the lightweight bout featuring Lando Vannata and Mike Breeden was removed from the card. Vannata's withdrawal from the fight due to an undisclosed injury raises uncertainty about Breeden's status and whether he will still be competing in the event.MMA Orbit@mma_orbit| Lando Vannata is OUT of his #UFCVegas78 fight against Mike Breeden with injury. [per @mma_kings]#UFCVegas78 #UFC #MMA pic.twitter.com/d7dT3Nre7D1168🚨| Lando Vannata is OUT of his #UFCVegas78 fight against Mike Breeden with injury. [per @mma_kings]#UFCVegas78 #UFC #MMA pic.twitter.com/d7dT3Nre7DThe current UFC Vegas 78's main card on August 12 includes:Vicente Luque vs. Rafael dos AnjosCub Swanson vs. Hakeem DawoduKhalil Rountree vs. Chris DaukausPolyana Viana vs. Iasmin LucindoAJ Dobson vs. Tafon Nchukwi