Former World No 1 Ana Ivanovic was upset 7-5, 6-4 by 42nd-ranked Karolina Pliskova of the Czech Republic in the second round of the US Open on Thursday.
World No 1 Novak Djokovic and Serena Williams advanced safely to the next round of the US Open on Saturday but the women's draw saw yet another big upset as Wimbledon winner Petra Kvitova was sent packing by a 145th-ranked qualifier.
Dr Manjul Bhargava speaks to P Rajendran about winning the Fields Medal, math's biggest global honour.
Vallabhbhai Patel's great claim to fame originated from his steely leadership of a struggle against a repressive regime, a good three decades before the achievement of states unification, points out Shreekant Sambrani.
