Tenerife and Real Valladolid shared the points following a goalless draw on a frustrating evening for both Primera Division strugglers at the Heliodoro.
Javier Clemente was unable to inspire the visitors to victory in his first match in charge of Valladolid, despite their first-half possession.
The Castilians lack a clear cutting edge up front and that was evident once again in this game - their fourth in a row without scoring.
Tenerife created more in this match overall and could have taken all three points, but did not do enough in the end and these sides look set to be playing each other again next season in the Segunda Division.
The hosts began the day in 18th position on 25 points - six behind 17th-placed Racing Santander.
Valladolid were a point worse off, with 24 points, and the club's miserable recent run saw them part company with coach Onesimo Sanchez earlier this week.
Former Spain coach Clemente was brought in as a firefighter - a role he last carried out successfully at Athletic Bilbao.
But with eight games remaining, it looks a tall order for Valladolid to survive.
The club has been blighted by problems on and off the pitch and the dismissal of experienced coach Jose Luis Mendilibar earlier this season now looks a huge mistake.
Both sides will have highlighted this as a must-win match in their attempts to avoid the drop.
Nauzet shot straight at Sergio Aragoneses after two minutes as the visitors threatened, but the midfielder's tame effort was easily gathered by the Tenerife keeper.
Nino shot wide at the other end as Tenerife responded less than a minute later.
The visitors did have the ball in the net after 28 minutes, but Richi was clearly offside and his strike was correctly ruled out.
Richi then shot wide six minutes later as Tenerife threatened once more.
The Canary Islanders were having the best chances, while Valladolid's superior possession was counting for very little.
Tenerife dominated the second half, but were unable to find a breakthrough.
Alejandro Alfaro's header flew over the bar just short of the hour mark and Dinei's fierce effort was brilliantly saved by Valladolid keeper Jacobo Sanz moments later.
Alfaro came close again late on, while Mikel Alonso was also off target for the visitors.
Jose Luis Oltra's men will have felt they deserved more from the game, having taken more risks and enjoyed the better chances.
But neither side was good enough on the night and it will be surprising if either can go on to mount a serious survival challenge from here.
With now just seven matches left, the two remain stranded in the bottom three.
Valladolid are in 19th with 25 points, one less than 18th-placed Tenerife.