Freiburg, meanwhile, put distance between themselves and the relegation zone with a 2-0 win against Arminia Bielefeld on Saturday.
Manuel Baum must have felt confident of gaining his first league win as Schalke manager when Florian Niederlechner was sent off only one minute after his side had equalised, with Nassim Boujellab putting the visitors ahead after the hour mark.
With the game into injury time, Richter struck to deny Schalke a first league win since January and keep them marooned to the bottom of the table. However, Baum may feel his side are due a stroke of luck, with a home game against Freiburg an opportunity to end the winless run.
Having failed to win their 10 matches following the impressive opening day win at Stuttgart, Freiburg had slid perilously down the table in recent weeks.
With their weekend opponents Arminia just one point behind them in the relegation playoff position, the meeting between the two struggling sides was a real six-pointer.
Streich and his players will now head to Schalke with plenty of confidence of gaining a result, with a win potentially putting more distance between themselves and the danger zone.
Schalke 04 Bundesliga form: DDLLLD
Schalke 04 form (all competitions): WDLLLD
Freiburg Bundesliga form: LLLDDW
Roland Sallai will be hoping to return to the starting XI having only featured from the bench against Arminia, but may have to remain patient after the crucial win.
Schalke 04 possible starting lineup:
Fahrmann; Stambouli, Kabak, Nastasic, Oczipka; Schopf, Boujellab, Mascarell, Serdar, Skrzybski; Raman
Freiburg possible starting lineup:
Muller; Lienhart, Schlotterbeck, Gulde; Schmid, Santamaria, Hofler, Gunter; Holer, Petersen, Grifo
We say: Schalke 04 1-2 Freiburg
With Schalke desperately short of options in attacking areas, we can envisage a second successive victory for the visitors.
Conceding a last-minute equaliser to ten-men Augsburg would have been a major blow to Manuel Baum's side, whereas ending their own lengthy winless run against Arminia will have boosted Freiburg considerably.