Southampton blew a chance to clinch promotion to the Premier League as Middlesbrough came from behind to win 2-1 at the Riverside Stadium on Saturday.
But despite taking the lead through Billy Sharp's strike just 46 seconds into the match, the Saints allowed Middlesbrough to take the points thanks to Nicky Bailey's equaliser and Merouane Zemmama's late winner.
Southampton -- five points clear of West Ham -- will now be keeping a keen eye on the Hammers' trip to Leicester City on Monday, when a defeat or draw for the east London club would seal promotion for Adkins' men.
Adkins' team pressed for a winner but it was Middlesbrough who stole the points in the 77th minute.
"You have to give enormous credit to our players," Mowbray said. "It helps us at home when teams come and attack as it's like an away game.
"Full credit to Southampton, they came and had a go but the win keeps our season alive."
Portsmouth were deducted 10 points for going into administration earlier this season and that punishment proved decisive as seven points separated them from safety with one game remaining.
The south-coast club -- FA Cup winners as recently as 2008 -- were beaten 2-1 at home by Derby County, but even a win would not have been enough to avoid demotion to the third tier for the first time since 1983 after relegation rivals Bristol City beat Barnsley 2-0.
Coventry's last hopes of survival were ended by a 2-0 defeat against Doncaster at the Ricoh Arena.
James Hayter converted an 81st-minute penalty for Rovers following Richard Keogh's red card and Simon Gillett netted just before the end to leave Coventry facing third-tier action for the first time since 1964.
Cardiff dropped to sixth after a 1-1 home draw against Leeds United.
Source: AFP Global Edition