The doubles game has considerable relevance in professional tennis, especially in team competitions such as the Billie Jean King Cup (former Fed Cup) (BJKC) and the Davis Cup (DC). However, there are very few studies that have carried out quantitative notational analysis to provide information on the specific features of this tennis modality. The goal of this study was to analyse the differences in serve direction and effectiveness of male and female teams in matches played at BJKC and DC ties. A total of 29,207 serves; 7,578 of BJKC and 21,628 of DC matches were analysed. The data was obtained through the Hawk-Eye system. The results showed that with the first serve, both BJKC and DC teams tried to move the receiver by serving to zones W (wide) and T to take the initiative of the point, while with the second serve teams took lower risks and mainly served to zone B (body). In general, in DC matches the effectiveness of the serve was greater than in BJKC ones. The first serve effectiveness in DC matches was found to be higher in each direction, while the differences in the effectiveness of the second serve was only found in the zone C (body) of the advantage service box. This information can be particularly relevant for coaches to design the doubles training sessions and the strategic planning of doubles matches on reliable and quantitative information.

双打比赛在职业网球中具有重要意义，尤其是在团体比赛中，例如比利·简·金杯（前联邦杯）（BJKC）和戴维斯杯（DC）。但是，很少有研究进行定量的符号分析来提供有关此网球形式的特定特征的信息。这项研究的目的是分析在BJKC和DC的比赛中男女队伍在发球方向和效力上的差异。总共29,207人；对BJKC的7,578和DC比赛的21,628进行了分析。数据是通过Hawk-Eye系统获得的。结果表明，在首次发球时，BJKC和DC团队都尝试通过发球至W（宽）和T区域来移动接发球，从而取得主动权 而使用第二个发球团队则降低了风险，主要服务于B区（身体）。通常，在DC比赛中，发球的效率要高于BJKC比赛。发现DC比赛中第一发球的有效性在每个方向上都更高，而第二发球的有效性差异仅在优势服务箱的C区（身体）发现。该信息对于教练设计双打训练课程以及在可靠和定量的信息上进行双打比赛的战略计划特别有用。而第二次发球的效率差异仅在优势服务箱的C区（身体）发现。此信息对于教练设计双打训练课程以及在可靠和定量的信息上进行双打比赛的战略规划尤其有用。而第二次发球的效率差异仅在优势服务箱的C区（身体）发现。此信息对于教练设计双打训练课程以及在可靠和定量的信息上进行双打比赛的战略规划尤其有用。