[4] Ramberg made a successful debut with the help of Swedish tennis legend Sune Malmström against Axel Petersen and Arne Velschow-Rasmussen.

Ramberg was included in the doubles match alongside Curt Östberg against Einer Ulrich and Fritz Gleerup, and swept a clean victory.

Östberg and Ramberg defeated the seasoned Hungarian veterans Béla von Kehrling and Pál Aschner in four sets giving the home team a two-one lead.

[11] The same month in Stockholm in the second unofficial team encounter against Denmark he lost to both Ulrich and Henriksen[7] In early 1931 the touring Racing Club de Paris visited and Stockholm and members of the famous French Four Musketeers, Jacques Brugnon and Christian Boussus challenged the doubles team of Ramberg-Östberg and overcame them in four close sets.

[13] In 1932 France beat Sweden in Stockholm, Ramberg lost to Antoine Gentien and Jacques Brugnon in two singles and one doubles rubber respectively.

[15] In November the ensemble of professionals of the Tilden Tennis Company arrived to Sweden and organized a series of matches against the amateurs.

[15] On the other hand Ramberg and Östberg defeated the pro teams of Tilden and Bruce Barnes and the German duo of Hans Nüsslein and Roman Najuch.

[15] In the end of the year in the Danish-Swedish challenge Ramberg lost in singles and doubles as well although this time he chose to play with Ingvar Garell.

[16] In August in the final of the Nordisk Cup he handed Sweden's first win against Ragnar Hagen but served a doubles loss against Hagen-Johan Haanes.

In March he couldn't defend his indoors doubles trophy in Stockholm giving opponents Kalle Schröder and Ingvar Garell their first feat.