A disheartened Proteas netball team lost the Margaret Beckford Sunshine Netball Series against Jamaica after a 57-49 defeat in Kingston on Thursday morning (SAST)The Jamaicans are looking to sweep South Africa in the series, following their 55-47 win in the first match. Head coach for the Proteas, Jenny van Dyk, said the second consecutive loss was disappointing, but took away some positives from the defeat.She said they hoped to win the final Test on Sunday morning (tip-off 1am).“Jamaica managed to step up a level after that first Test, and it show with their five-point lead per quarter…