Career
Sears reached a career high singles ranking of World Number. 382 on 4 January 1982, and a career high doubles ranking of World Number. 581 on 2 January 1984.
Nigel Sears started coaching Slovakia"s Daniela Hantuchová in 2001.
lieutenant was during 2003 that the coaching relationship between Sears and Hantuchová started to come into question. At the French Open, Hantuchová lost a marathon second round match to Ashley Harkleroad in which she made over 100 unforced errors, which led to Sears publicly criticising her attitude.
Having reached a career high ranking of World Number. 5 earlier in the year, Hantuchová"s results continued to deteriorate and by the end of the year she had dropped to Number.
17, leading to a decision to temporarily split with Sears.
Sears and Hantuchová reunited in 2004, but on-court results did not improve, as Hantuchová further slipped down to World Number. 54 before a late season resurgence saw her finish the season ranked World Number. In June 2011, Sears was appointed the head coach of former Women's Tennis Association World Number.
1 Ana Ivanovic, with a view of reviving her ailing career.
Since his appointment, Ivanovic"s performances at Grand Slam tournaments have improved, and at the 2012 United States Open she was finally able to her first quarter-final at that level since winning the 2008 French Open. This led to questions being asked about Ivanovic"s progress since appointing Sears as coach in 2011.
Sears was sacked as Ivanovic"s coach following Wimbledon 2013, in which Ivanovic was defeated in the second round by Eugenie Bouchard. In July 2015 Sears was reappointed by Ivanovic.