Berg is a useful seam bowler who originates from South Africa but has lived in England long enough to qualify for UK residency.
He began playing for Northamptonshire 2nd XI in 2004 but failed to break into the first team, signing for Middlesex in 2007.
Again, he initially found himself in the second team but made a handful of first team appearances in 2008, including a five-wicket haul against England Under-19 at Radlett.
However, in 2009 he was one of only a few bright spots in Middlesex's awful campaign.
Making 13 Division Two appearances he scored 668 runs in the season, including a superb 98 against Kent to help them to a rare victory. He also finished top of the Twenty20 Cup batting averages.
Bowling-wise he was dependable in taking 23 wickets in the four-day game, while he also proved he was no slouch in the one-day format in taking nine NatWest Pro40 wickets.