Reid had won his last four meetings against FernandezVenue: Tokyo, Japan Dates: 24 August-5 September Time in Tokyo: BST +8Coverage: Follow on Radio 5 Live and on the BBC Sport websiteDefending champion Gordon Reid reached the men's singles semi-final at the Tokyo Paralympics with a three-set victory over Argentina's Gustavo Fernandez.
The British fifth seed came through 7-5 3-6 6-1 against the world number four in two and a half hours.
Fellow Briton Alfie Hewett, who won silver in Rio, is also into the last four after beating France's Nicolas Peifer 6-3 6-3.
Reid will face world number one and home favourite Shingo Kunieda for a place in the final with second seed Hewett up against either Tom Egberink of the Netherlands or Spain's Daniel Caverzaschi.
Wednesday's results mean Britain are guaranteed a medal in the men's singles because, if Reid and Hewett lost their semi-finals, they would play each other in the bronze medal play-off.
Earlier, archer Victoria Rumary won bronze for GB in the women's W1 event while there was also table tennis bronze for the class 8 team of Ross Wilson, Aaron McKibbin and Billy Shilton after they lost to China in the semi-finals.
Boccia player David Smith bids to retain his BC1 individual title from 08:50 BST against Malaysia's Chew Wei Lun.
The GB men's wheelchair basketball team face Canada in the quarter-finals at 10:15 as they bid to add Paralympic gold to their European and world titles.
Swimmer Becky Redfern, who gave birth to son Patrick in July 2020, qualified second-fastest for the final of the SB13 100m breaststroke (11:09).
Athlete Sammi Kinghorn bids for a medal in the T53 100m, an event in which she was world champion in 2017 (12:37).
