McGuinness was named NIFWA Women's Player of the Month for July
Linfield Ladies secured their first ever Champions League win by beating Greek champions PAOK 3-2 in their second qualifying round match.
Captain Kirsty McGuinness scored a last-minute penalty winner in Belgium to keep alive her side's chances of getting through the group stage.
It was 2-2 at the break after goals from Kelsie Burrows and Ashley Hutton before McGuinness struck from the spot.
"I couldn't have imagined it any better," said Blues boss Phil Lewis.
While a draw would have left the Blues with no chance of qualifying, the victory means they are still in contention, three points behind the Belgian side.
The teams are in a four-team group with the winner progressing to the last 32.
Speaking to the Linfield website, external, Lewis added: "To go a goal down early and then get the winner in the last minute was just fantastic.
"I thought I would have settled for the point at two-each but then when the penalty was awarded I knew we could get our first win.
"It's a great achievement all round for women's football in Northern Ireland as we are representing all the teams as the league champions."
Linfield's next match is against hosts Anderlecht on Tuesday.
