Great Britain beat Serbia 2-0 in the Play-Off after Konta overcame illness to beat Krunic and Boutler earned a classy win over Jorovic.
Johanna Konta hung on to secure a tense three-set win over Anna Bondar that booked Great Britain's place in the play-off against Serbia.
Johanna Konta led by example with a battling display to see off Greek No.1 Maria Sakkari and secure victory for Great Britain.
Great Britain beat Slovenia 3-0 in the Fed Cup after Katie Boulter won in straight sets to get them off to a perfect start.
Heather Watson’s poor run of form continued at the Miami Open as she lost 7-6(3) 6-2 to Beatriz Haddad Maia in the first round at Crandon...