Hockey India selection committee chairman Harbinder Singh too vouched for John and said the Australian has everything in him to produce results. ’The Netherlands coach Dick Advocaat has told his players and Dutch supporters to forget Thursday. Roelant Oltmans sacked: 23rd hockey coach fired in 23 years; says 'can't change system'. The players alleged that Oltmans ‘favoured a couple of players’ despite their poor form, which affected the morale of the team. “I don’t really feel calm,” she said. When he took over as the chief coach in August 2015, Oltmans insisted he could succeed where none of his predecessors had. “I had a great time and enjoyed here,” he said. But all of them had left these shores disillusioned. s, with large numbers taking to social media to express their unhappiness about a player who earlier this year signed a new five-year deal with the words: “I signed this new contract to stay here for a few more years because it’s a great honour for me. ear after her bruised knee gave her immense pain, the 27-year-old got going after promising to play ‘smart badminton.