The tournaments involve eight players each, divided into two pools of four on a round-robin basis. Sets have been slashed to best-of-seven games.
Rohan Bopanna and Saketh Myneni lost the do-or-die doubles rubber against Serbia as India conceded an unassailable 0-3 lead to lose the Davis World Group Play-off tie, in Kraljevo, Serbia on Saturday.
Djere is ranked higher than Ramkumar at number 86 but is yet to win a match in Davis Cup. On the other side, Ramkumar is placed 135 in the world but is far more experienced, having played six ties with a 7-5 Win-Loss record.
The final of the Croatia event in the coastal resort of Zadar, the second leg of the tour which would have featured world number one Novak Djokovic and Russian Andrey Rublev, was cancelled as a result.
A summary of sports events and persons who made news on Wednesday.'
Prajnesh Gunneswaran and Ramkumar Ramanathan will lead the singles challenge, while Rohan Bopanna and Divij Sharan will make the doubles pair for the grass court tie.
In the absence of an injured Yuki, a lot would depend on how the left-handed Prajnesh, who won a singles bronze medal at the Asian Games, performs.
The 36-year-old Swiss master needs only to reach the semi-finals at the ABN Amro tennis event to overtake Rafael Nadal at the top of the ATP rankings and become world number one for the first time since November 2012.