Kevin Stadler and Roberto Karlsson have shared the clubhouse lead at the end of day two of the OHL Classic in Playa del Carmen, Mexico.
Darkness brought an early close to play, with only 29 players able to complete their second rounds.
The pair are currently on 12-under, three shots clear of Rory Sabbatini and Chris Stroud, while Ryan Moore, Jhonattan Vegas, Pat Perez and Jay McLuen are on eight-under.
Jason Bohn (-7) and Scott Brown (-7) complete the top 10.
The cut is currently projected at one-under, although many in the field are yet to get their second rounds underway.
Among those are Darren Clarke (E) and Brooks Koepka (+1).