<xs:attributeGroup name="tennisActionAttributes">
    <xs:attribute name="set" type="xs:integer" use="optional">
        <xs:annotation>
            <xs:documentation>Which set this play takes place in. Tennis is played in 3 or 5 sets</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="game" type="xs:integer" use="optional">
        <xs:annotation>
            <xs:documentation>Which game in this set the play takes place in</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="win-type" use="optional">
        <xs:simpleType id="winType">
            <xs:restriction base="xs:string">
                <xs:enumeration id="winTypeForced" value="forced">
                    <xs:annotation>
                        <xs:documentation>The point was made while the opponent for example
                                advanced towards the net.</xs:documentation>
                    </xs:annotation>
                </xs:enumeration>
                <xs:enumeration id="winTypeUnforced" value="unforced">
                    <xs:annotation>
                        <xs:documentation>The point was made regardless of specific actions by
                                the opponent.</xs:documentation>
                    </xs:annotation>
                </xs:enumeration>
            </xs:restriction>
        </xs:simpleType>
    </xs:attribute>
    <xs:attribute name="server-score" use="optional" type="QCodeType">
        <xs:annotation>
            <xs:documentation>SportsML vocab uri: http://cv.iptc.org/newscodes/sptengameresult/</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="receiver-score" use="optional" type="QCodeType">
        <xs:annotation>
            <xs:documentation>SportsML vocab uri: http://cv.iptc.org/newscodes/sptengameresult/</xs:documentation>
        </xs:annotation>
    </xs:attribute>
    <xs:attribute name="serve-number" use="optional" type="QCodeType" />
</xs:attributeGroup>